Now, as a teacher and a professional musician who plays at wedding and parties, I have unlearned the mindset for perfection. Oh, I still try to get everything to the best of my ability but now I strive for painting a musical picture as vividly as possible. I heard a motivational speaker say "strive for excellence, not perfection." What I've learned from playing at numerous gigs is that most people don't know you've made a mistake unless you draw attention to it. Keep going, smile and don't miss a beat whatever you do.