The ISTP Personality Type


ISTPISTPs are known for being down to earth, practical, and laid back. Rather than hearing a long winded explanation, they would much rather take action in the present and get results now.

You can always rely on an ISTP to fix something, create a solution, or troubleshoot a problem. These people generate solutions and implement them at an incredibly fast pace. Their analytical skills are top notch and when they are able to get their hands on something that catches their eye, they make sure to explore it all the way down to its core. Their dominant function is Introverted Thinking (Ti), and it is the source of their analytical prowess and troubleshooting abilities. With Ti, ISTPs are able to get to the root of the problem and make sense of it logically. They like to maintain their objectivity and let their rational self take the lead at all times; ISTPs and emotions do not mix well.

ISTPs live in the moment and like to take action in the present. Daily routines and boring methods are the best way to kill an ISTP on the inside. These people will work hard at something that actually interests them and like to find their own unique path in life. ISTPs have a risk taking air about them due to their auxiliary function: Extraverted Sensing (Se).  Se relies on the 5 senses – sight, sound, touch, smell, and taste – and is the main source of their action oriented tendencies. They can even be led into dangerous career paths because living a life like everyone else would simply be too boring for these people.  They are risk takers and thrive on action, however, keep in mind that these people are still introverts.

The dominant function of the ISTP is an introverted one and ISTPs need ample down time to recharge their batteries every now and then. ISTPs take in information from the world with their Se, then make sense of it and analyze the data with their Ti. These people are interested in the world around them and their curiosity knows no bounds. With the combination of Ti + Se, ISTPs perceive the outside world, analyze it, and then get to the core truth about what they have perceived. This combination is why ISTPs are so great at figuring out how things work.  From there they can figure out how to improve or make tweaks to the current system.

Fields such as engineering where ISTPs can use their hands and work on something directly are places where they excel. They can absorb and memorize concrete facts with ease and also do well in fields such as accounting or mathematics. Their communication and social skills are areas where they may have trouble with, and they often have a hard time opening up to people. ISTPs will express themselves in as few words as they can but will make sure they get their point across. Even non verbal forms of expression can be their option of choice. A strong asset that ISTPs possess is their level headedness in high pressure situations; where others may get overwhelmed by their emotions, ISTPs will take their time and get the job done right.

Their tertiary function is Introverted Intuition (Ni), and their intuition is only there to support them in this lifetime. ISTPs get these feelings that they know they are right about something, even without actually going through the process and reaching the conclusion themselves. It gives them a quick glimpse of the future per se, and when properly developed it can become a very valuable asset in their toolbox. Ti + Se is the main combo for ISTPs, but Ni is the glue that holds everything together. Ni can also help when trying to piece together clues or hints, or interpret the hidden intentions of surrounding people. It can even make ISTPs suspicious of others and even avoidant of social interaction as a whole. Dreaded comfort zones and procrastination are also demons that these people will have no choice but to defeat.

Their inferior function is Extraverted Feeling (Fe), meaning that when it comes to sensing how are others are feeling they often have a tough time. Feelings in general are not the strong point of those with the ISTP personality type. They may even completely dismiss their own feelings and view it as a sign of weakness. As ISTPs develop their Fe they will become more and more comfortable with themselves and their own emotions, as well as become more tolerant of the emotional outbursts of others. Even from a young age Fe will show it’s rear end but it may not be as noticeable as it would be for other types.

The functions:

Dominant function: Introverted Thinking (Ti)

Auxiliary function: Extraverted Sensing (Se)

Tertiary function: Introverted Intuition (Ni)

Inferior function: Extraverted Feeling (Fe)

There aren’t too many ISTP books on amazon but you may want to check out the one below. This book is recommend for those with ISTPs in their lives, as well as for further in depth self-learning for ISTPs themselves.


The ENTJ Personality Type

ENTJENTJs are strong willed people who are the supreme overlords of their own zone. Anything within that zone is subject to being changed, improved, or organized.

The ENTJ’s zone pertains to anything that is within their control. This could be as small as their desk at work or even as large as an entire country.  Their dominant function is Extraverted Thinking (Te) and it is the reason why the ENTJ zone exists. Te is what compels them to take control of the outside world and organize it in whatever way they think is best. ENTJs enjoy being in a position of power and love to call the shots. These people are direct and straightforward in just about everything they do and it can rub more sensitive types the wrong way. If you want to convince an ENTJ to do something then you better come at them with solid facts and reason or do not even try, these people likely already have a plan in place and it can be tough to sway them of their plans.

ENTJs are natural executives and often end up becoming the leader by default. These people like to get things done and do not like to waste time, they truly are the ultimate decision makers. Whether they are right or wrong, these people will still make a decision. As a result, they can sometimes make hasty decisions that may not be perfect, but hey, at least they got things rolling. These people hate indecision and will often take control if people seem indecisive or unsure about a situation. This is why ENTJs are so reliable and make such amazing managers and leaders. They hold the power to inspire and lead those around them in a way that is incredibly unique to their personality type.

These people are driven by the future possibilities and often have big goals in life. Their thinking is long range and their plans are thorough. ENTJs tend to put a lot of focus on their future goals and career. They love a good challenge and intend to succeed in whatever they set their sights on. The reason why they are so future orientated is because their auxiliary function is Introverted Intuition (Ni). These people rely heavily on their intuition to solve problems and plan for the future. So if their Ni is underdeveloped then their decision making accuracy will likely suffer. Their combination of Ni + Te is why they make such amazing leaders and decision makers. With Ni they can develop solutions to problems incredibly fast and with Te they know just what to do to make the solution a reality.

Their tertiary function is Extraverted Sensing (Se) and it can assist them in their decision making, as well as urge them to take risks in life. It can also cause them to want to be showy, or flashy at times in their actions. Although these people can be risk takers at times, rules are considered sacred to them and attempts to break them are considered sinful. This is especially prevalent when they are in a position of power and when they are the ones who set the rules. They have the power and they expect people to abide by their rules, that’s just how it works, plus they are confident in their abilities to do what they think is right for everyone. If you willingly enter an ENTJ’s zone then you have no choice but to abide by the rules that they have set and violation of the rules is considered treason.

Their inferior function is Introverted Feeling (Fi), it is their weakest attribute. Feelings in both themselves and in those around them are very often neglected or overlooked. ENTJs will not show their emotional side to people in public as they tend to view it as a sign of weakness, but they do have a soft side to them buried deep down inside. In public they often appear calculated and cold, especially when they are trying to get things done or are at work. They do not have time for emotions and feelings when it comes to accomplishing a goal or managing a project. However, when it comes to a certain special someone or their loved ones then they can be quite loving and affectionate people.

The functions:

Dominant function: Extraverted Thinking (Te)

Auxiliary function: Introverted Intuition (Ni)

Tertiary function: Extraverted Sensing (Se)

Inferior function: Introverted Feeling (Fi)

Extra comments:

One of my friends from college is an ENTJ but the funny part is that I thought he was an introvert this whole time. He was in the same Japanese club with me and he was always so soft spoken and seemingly shy. The day that I found out that my personality type was INFJ I instantly posted an article about it on Facebook and he replied that he was an ENTJ. It honestly blew my mind at first but now I’m starting to see how it could be possible. He loved to talk and he was always very blunt and direct with his words. He seemed to have a very tough time being assertive when it came to dating and relationships, but that could possibly be a common ENTJ problem. Likely because his attunement to the feelings of others was so weak, he could never tell if a girl liked him or not, and he would never take the leap and put himself out there. He would always talk about the future and what he was going to do in the future, but he would seldom do anything in the present when it came to relationships. I believe that he heavily neglected his Extraverted Sensing this entire time and didn’t understand the necessity of risk taking in life. I haven’t seen him in a while so I wonder if anything has changed…

A serious message to INFJs

Do not let your INFJ label take you over. It can stop you from taking risks in life because you think you are suppose to act a certain way. You may think that you cannot do something just because you are an INFJ. It’s okay to learn from it and use it to understand yourself, however, once it starts holding you back you need to ditch the label and start looking within. Stop comparing yourself to other people, other INFJs in particular. Just because one INFJ is unable to do something, doesn’t mean that another INFJ is unable to as well. For any personality types for that matter. We are all individuals and our personality type or astrology sign or anything like that does not define us. They are only tools to help us understand ourselves.

Remember that at the end of the day there are no two individuals that are exactly alike. We are all at least capable of attempting whatever we want in this life because we are all human. We cannot be afraid of failure and we have to take risks. If you don’t even try then you’ll never know, no matter how well you may try to predict the future. It’s time to live in the present and start taking action here and now. A dream is truly only a dream if it stays in your head. It will remain a dream until you take action and start manifesting it in real life. Take. Action. Now.

So yes, you can become a stand up comedian. Yes, you can give a speech in front of millions of people. Sure, doing some of those things may be harder for certain personality types than it is for others. For INFJs in particular, it can be hell when it comes to breaking out of your comfort zone. The rewards however for doing so can be very great, especially for INFJs. These people have so much to offer to the world and it’s all just waiting, sitting there stagnant, right there inside of you while you procrastinate and complain. Soon enough, you start to get too comfortable and convince yourself that you are better off not taking risks. That comfort zone is so dangerous for INFJs because we can be so sure of ourselves sometimes. INFJs can literally convince themselves wholeheartedly to believe that something like staying in your comfort zone is the only way to live. They do all of this subconsciously too and may not even notice they are doing it. You may give up on love because you think no one will understand you, so you subconsciously convince yourself that you don’t need love. If you give up then nothing will change and you’ll just remain bitter and lonely. If communication and understanding is the issue, then you have to get so good at communicating that the other person will get you. You think people wont understand you but have you really tried? More than once? Like really? You can’t let fear of failure or being misunderstood stop you from trying.

Just sharing a bit of what I learned recently, the hard way.

The INFP Personality Type


infphoeAn INFP’s inner world is their life source, and at its core lies a passionate flame that is ready to engulf all things corrupt and inhumane.

INFPs are original, sensitive, and creative people who are very in tune with themselves and how they feel about things. They are very sensitive to conflict and seek harmony in their everyday living. Their dominant function: Introverted feeling (Fi) is their inner world and the source that guides their actions. If harming innocent children is a forbidden law within that world, then it is likely that the INFP will bring out that passionate flame and fight the injustice when they see it. They like to tackle things depending on how they feel, and logic tends to take a backseat in the matter.

Random example:

The task at hand will physically harm 300 innocent people, but it will get America out of trillions of dollars of debt.

Is harming 300 innocent people okay with the INFP’s value system? Most likely not. But America is in trillions of dollars of debt! This could change everything!…but innocent people…

Most INFPs would not only refuse such a task, they would fight against the injustice too. There is no reason why innocent people need to get harmed, despite the material benefits.

INFPs feel things very deeply, and just about everything is an emotional experience for them. These people actually need these types of experiences to feel sane. A world without feeling or depth is a sad world indeed for the INFP. Their tertiary function is Introverted Sensing (Si), meaning that significant experiences in their lives can make a life long impact. With Si, they can remember important past experiences (good and bad) and often end up replaying them in their head. This can be a comforting experience and it can also help them learn from past mistakes. They often combine this with their Fi to get a double dose of nostalgia and melancholy. However, this can be dangerous because they can get stuck in a Fi + Si loop. Being caught in one of these loops can get depressing and can seem almost never ending. They often completely neglect their auxiliary function: Extraverted Intuition(Ne) during one of these experiences.

As INFPs move about the external world, their inner world remains closed off as they take in the world around them via their auxiliary function: Extraverted Intuition (Ne). They rely heavily on their intuition and see the world in possibilities, or ‘what ifs’. To some, the INFP’s reliance upon intuition and feelings can seem irrational, or illogical. These people value authenticity in both themselves and those around them. People who are clearly fake or are projecting a false image are off putting to INFPs. They generally avoid these types of qualities when it comes to choosing friends. If an INFP lets you in their zone and starts ‘thinking out loud’ then that is a good sign that they feel comfortable with you.

INFPs will procrastinate hard when it comes to dealing with things that produce a bad feeling within. A stressed out INFP may cut themselves off from the world entirely and feel little remorse in doing so. INFPs are perfectionists and will often give themselves a lot of grief for making a mistake. These people are highly sensitive and try to avoid conflict whenever they can. However, their sensitivity can magically disappear when fighting an injustice or supporting a cause that they believe in. INFPs suffer from self doubt and can have a tough time taking action in the psychical world. Especially at a young age when their inferior function: Extraverted Thinking (Te) is underdeveloped. This will mostly likely be a weak point for these people until mid life.

INFPs are introverts and need time to themselves on a regular basis in order to recharge. It gives them time to think and sort through their feelings. Everything that happened throughout the day produced a different feeling within them, and they need to process those feelings. After processing those feelings, INFPs will feel energetic and ready to take in some more emotions. At their best, they often end up healing the suffering of others simply by lending an ear in a time of need. People love to tell all of their problems to INFPs, and they have a knack for putting people at ease. These people will make a great effort towards understanding people on a deep, non superficial level.

INFPs would likely enjoy working in a place that allows their natural talents for understanding and relating to others to blossom. They may not always desire to directly deal with people all the time, but work that involves helping people in some way is ideal. Their intuition is excellent at seeing the possibilities related to people and INFPs would likely do well in counseling, teaching, or psychology. These people are also very imaginative and would do well in a career involving artistic expression such as writing or music. Many INFPs report preferring written expression over verbal because of how natural it is for them. With their dominant function being an introverted one (Fi), these people are quite sensitive and may feel awkward when conversing in the presence of others (especially if they don’t know you).

INFPs need to have a purpose in their work or they will feel like they are wasting their time. Money alone is not enough to motivate these people to work hard. They often avoid dealing with mundane details and long winded explanations about how things work. They would rather just get straight to the point and hear how it’s going to help others and what they need to do to get things rolling. An INFP needs to find their own path in life, and when they do find something that ignites the fire within, their passion alone will become the beacon that inspires and heals all who come in contact.

The functions:

Dominant: Introverted Feeling (Fi)

Auxiliary: Extraverted Intuition (Ne)

Tertiary: Introverted Sensing (Si)

Inferior: Extraverted Thinking (Te)

For INFPs seeking a deeper level of self-understanding, this book will teach you how to grow as a human being and minimize your weaknesses. This book can also be helpful for every day living, career choices, and relationships. I have not read this book personally however the reviews on amazon look very promising.

The INTJ Personality Type

The strategic visionaries who tend to approach life as if it were a giant chess board…


INTJs are always subconsciously absorbing information and are able to visualize the future possibilities in great detail using their dominant function: Introverted Intuition (Ni). They can see the future possibilities so clearly in their head and can be unforgiving to those who interfere in the actualization of their plans. INTJs observe, analyze, and plan with their Ni before they make the optimal move of choice. The choice that the INTJ finds optimal is often off the beaten path and may not make sense to outsiders. They may take a path that no one else knew existed and still end up with better results at the end. These people are as original as it gets and can be stubborn when it comes to realizing their plans.

INTJs are problem solvers to the highest degree. A place where there is logic, order, and a problem that needs to be solved is where they really shine. Engineering, technical fields, or even on a chess board are the places where INTJs really shine. The chess board metaphor is synonymous with one of the greatest chess players who ever lived:

Bobby Fischer
Bobby Fischer (INTJ) on the right. credit: google images

They are fiercely independent and innovative by nature. They tend to view the world in a way that is completely unique to them, and everything they subconsciously absorb using their Ni is in a secret code that only they can understand. If they choose to decipher that code in order to explain to outsiders then they may choose to do so. However, it can be very difficult for them to explain what goes on in their head to others. The information and the plans they formulate in their minds are not always able to be fully explained verbally. These people often report feeling misunderstood at times for similar reasons.

It is not surprising for an INTJ to have an amazing plan brewing in their head and even execute it in it’s entirety before anyone was aware that such a plan existed. More often than not, this plan ends up solving numerous problems all at once and may even utilize the people around them like chess pieces on a board. This is a prime example of their ultimate combination of  Ni + Te at work.

These people tend to take a similar approach to just about everything they do. They are patient and analytical by nature and like to make sure that they get things done right the first time. Not the second time, and not the fourth. Their need for perfection and stubborn determination makes them relentless when it comes to getting the job done.

Their auxiliary function is Extraverted Thinking (Te) and it is the source of what urges them to solve problems in the external world. This is also what makes them so logical and organized. Te urges them to take control of the external world and make sense of it logically, and they may even take control of a project in the workplace in order to improve an already established system. They may even be so inclined to undermine authority in order to realize their plans and improve on what was already built. There is nothing wrong with doing such a thing in their head because they are making improvements, but this may rub some people the wrong way if it happens too often. These people work best on their own anyway, no one to get in the way and slow them down.

Personal relations for INTJs can be difficult. They are not very in tune with the feelings of other people, especially when they are trying to execute one of their ingenious plans. Their tertiary function: Introverted Feeling (Fi) makes them a lot more in tune with themselves then they are with others. As a result, these people are often guilty of ignoring the opinions and contributions of others. They see how things will work out in their head so clearly that the input of other people are unneeded in their eyes. This is what makes them so fiercely independent; they definitely work better alone than in the group setting.

INTJs are actually natural born leaders with the tools necessary to call the shots and make big plays. However, they are also introverted in every sense of the word and may prefer a less people orientated role. They need ample down time in order to sort through their thoughts and feelings on their own, as well as recharge their internal batteries so they can function. They often come out feeling much better than they did before. Social anxiety or awkwardness are common problems that these people face. This is another reason why INTJs often report feeling misunderstood by others. Their inferior function: Extraverted Sensing (Se) can occasionally turn these people into spontaneous thrill seekers. Se is also what may cause them to overindulge in sensual pleasures and overeating. With proper development, Se can be the key that breaks them out of their shell and gets them to take a few risks in life.

The functions:

Dominant function: Introverted Intuition (Ni)

Auxiliary function: Extraverted Thinking (Ti)

Tertiary function: Introverted Feeling (Fi)

Inferior function: Extraverted Sensing (Se)

For INTJs who are seeking an in depth guide to further self-understanding. It’s a really affordable book too with great reviews.