I'm INFP, but I'm going to answer anyway... hope thats ok, sorry if it isn't.
I used to feel weird about who I was and what I naturally tend to do, but that was back when I was maybe 10... that probably went on untill I was 14. At that point, I began getting a lot more comfortable with myself, and now, two years later, I'm generally very comfortable with myself. My only worries (that relate to this, anyway) or how I can use my naturally tendancies to my advantage. I think there is a lot of friction between who I want to be/should be/am and what I'm suppose to be from the outside. I'm fine with who I am, and although I'm not even sure if I have any ambitions or anything, I think that the ones I probably have deep down wouldn't neccasarily be encouraged by my oh-to-practical parents. What I want to do and tend to do doesn't always agree with what I'm told to do... in a sense. I'm not saying I'm a rebellious person or anything, but I don't think I neccasarily would do well if I did what I'm encouraged to do (which is pretty much study business, or history, or become an architect, or a lawyer. I have no problem studying history, but those other things? Blah). I don't really know what it is I really want to do though, maybe be a writer or musician... but I'm still not sure.
I'm told I'm weird on a regular basis, but I'm fine with that... I think people find me weird in a charming sort of way, because people never stop talking to me for being weird. I get way weirder when in "extravert" mode, too.