when presenting an instrument performance, it will seem easy at home, but then WHY did u fail. I'll tell u why. let me guess, u probably did good on ur first time. AND GUESS WHAT, that overconfidence led u to fail the second one. AND THEN that leads to no self-worth, AND THAT LEADS TO ur 3rd performance being a disaster. :) so WHAT SHOULD u do? Let me tell u, look and be confident, and you WILL achieve it! NOT OVERCONFIDENCE!!!:)