I have a live show with my band this night. Even though I love playing, today I'd really love to stay at home and start another side project that I'll soon regret

Think why you joined in the first place. remember your feelings at first or second show. Your band mates with whom you have that unique connection. The audience which will have an really awesome time because of you. Isn't this way more valuable than only make yourself happy? Don't be a ego, rock the show! Smile and people will smile back ♥️