I never feel like I do anything good...?

naw your not wasting anyones time, that's what we are here for to help each other out, you have a bit of low self esteem, you sound a bit like me when i get down in the dumps. you did not say what you play or what seat you have. keep it up, when you feel neg on yourself think about how good it feels to play, how good it feels to play how good it feels to play how good it feels to play and how it relaxes you, forget how people would think just how you enjoy playing and how it relaxes and makes you happy. keep thinking this over and over, if this dose not help, go to your school counselor you may need some help.