Curmudgeon
default setting: sarcastic prick
I'm pretty sure that ever since I screwed up at a piano recital my mom (who's a piano teacher) held, I've started getting anxiety just from practicing. Not sure it if's just me, but really, ever since that time, it hasn't been the same.
you have to have amnesia with public performance of any kind. if you dwell on your mistakes, you'll never make it. screwing up is a painful but necessary part of the maturation process. the only thing you can control is how you prepare for the next performance.