I thought I was an extrovert because with certain people, I can talk to them for days on end. But I have the difficulties with 'people I'm not comfortable with,' like you guys mentioned. I can often feel how they will respond to what I say, and I am selective with the topics I mention with each individual person, knowing their interests and our common ground.
I almost feel like I have to grow out of these tendencies, too. Like they're bothersome, and 'not me,' and I'll finally be liberated when I do. I've done a ridiculous amount of analyzing to find the 'core problems' around my feelings and actions, and a lot of times once I figure it out the problem disappears.
I think my mind is stuck between ENFp and INFj in social matters. Ummm, is this possible?
EDIT: I may have 'learned' to be an introvert due to my social anxiety when I was younger. Also, both of my parents are shy. I must be an extrovert, because I hate being alone, doing activities alone, and when other people tell me they need to be alone I can't understand why.