I've taken various tests dozens of times, and I almost always get INFP. Looking at each trait individually, I would say it would fit. I am an introvert (but not at home, more on that below). I am pretty sure I am an N. I am certainly an F, and I'm probably a P.
But when I read the various descriptions of INFP, I see that they always describe the type to be very focused on their lives being harmonious with their "values", that they have "strong commitments" to "causes they believe in".
I don't relate to that at all. I, in fact, don't have many causes that I believe strongly in, and for the causes/morals/etc I do believe in, I can easily argue for the other side. I enjoy arguing just for the sake of it (but about issues I'm detached from..and I'm detached from most issues). I'm not really focused on making the world a better place.
What matters to me is nostalgia for childhood, the aesthetic beauty of the world, impressionistic moods and feelings I want to capture. Or just being with my family. So I'm a F in that sense, but I'm not emotionally connected to being a humanitarian or anything.
Also, I am a very different person at home than I am in public or at school.
At home, I am very much an extrovert. Yes, I do spend time in my head, but I'm loud, hyper, attention-seeking and I enjoy fast-paced conversation. I am also like this with cousins who I consider siblings. Except for a few things, I share all my feelings, my ups and downs, and I get depressed without interaction with my family or family friends. People who know me say I am talkative to the point of being annoying. I ask too many questions. I act like a hyper 5 year old at times.
Outside, at school, I'm very private, reserved, and quiet. I dread public speaking, social interaction, and I live in my own head exclusively. I was voted "most quiet" in one of my classes, which would make my family laugh.
So yeah. Any help?