A great question, Brad. There are quite a few things, but the one that sticks out the most is that it would've been better for me, at certain times, to tell my parents where to go. It would've made our relationship a healthier one than it is now, rather than sitting with them in their house, with a big green elephant in the room, in other words, all the things that we all really want to talk about, but usually are left unsaid.
On another plane: if I could go back and live my post-adolescent life all over again, I wouldn't be so serious about things, I'd live for the life, as a close friend of mine (who died when he was eighteen) used to say quite often. In the middle of Psych class, I'd have gone up to the front of the classroom, and tickled my young, voluptuous, blonde teacher. You know, live for the life.