By the way, I was shy until taking theatre classes and taking part in a real-world (not in high school or college or anything) play.

Then again, it could be a schizoid personality disorder undoing itself; it was about the age the frontal cortax finishes maturing -- that's why if you don't get schizophrenic by 17-22 you probably won't. I didn't, so schizoid features phased out.