It's hard for me to tell, because most of my childhood and adolescence was twisted by a rough home situation. I feel like a lot of my insecurity and depression carries over from that time, and every time I think I'm "cured" of something it pops right back up again a little while later. I keep hoping that I'm "cured" and that wishful thinking probably keeps me from seeing how much I've actually stayed the same over the years.
At the core, besides being fucked up - I guess I'm still loud and crazy and always pushing the envelope. I've been like that since I was a kid, but never got to act on it until I moved out of the house. I'm still stubborn and independent. When I was 6 years old, I remember getting into a heated argument with my parents about why children should be able to vote. Still hate being told what to do. That one's probably genetic.
Still need to please people underneath it all, which may be part of being fucked up or may be my basic personality. Still get withdrawn sometimes and think that people don't like me, which is definitely a hangover from childhood and probably a direct result of being told that I suck as a human being, many times.
Definitely developed my Ti function during college, and I value that immensely. The better my thinking skills, the easier it is to build my life the way I want it. I rely less on Fi now, or so it seems - everything needs to be examined before I believe in it, and few things stir up the intense melancholy that I felt almost every day when growing up. I prefer it that way.