Some days and some weeks are going to be difficult. Here are some suggestions that immediately come to mind you might consider to dampen down the practice room blues. These comments are aimed at beginners.
If I can help you, call me.
You've got to learn your instrument. Then, you practice, practice, practice. And then, when you finally get up there on the bandstand, forget all that and just wail.
I'm a professional pianist and music educator in West Toronto Ontario. I'm also a devoted percussionist and drum teacher.