Oh, there are so many things that I would change. First and foremost, I would magically make my depression, panic attacks and obsessive fears/thoughts vanish forever. I think it'd make my life a lot easier. Although, there's a big chance that if I did let go of those issues (if I was capable of just simply getting rid of them), there might be a void. So, I dunno. Complicated crap.
I would get a job, socialize and I guess learn to trust people.
Blah blah blah.