Sometimes, people get stressed not by outside factors (like having way too much work) but by the pressure they place on themselves.
Remember, it’s all right to make mistakes.
It is all right to say no when someone asks you a favor and you already have too much on your plate.
It is all right not to please everybody. It is all right to take a break and play your guitar out loud with fulltone 70 fuzz!
Do your best, but don’t bash yourself if your best isn’t 100%.
Lighten up and you will enjoy each little victory and accomplishment more.