Struggling with Boredom and Self-Worth

When left with nothing to do and nobody to hang out with my coping mechanisms for boredom include nothing much more that smoking pot and binge eating. I play guitar some but never feel good about my ability. Same thing with chess. Or any activity I start to pick up. I feel good about myself for doing it for a short second, then it fades away and the feeling of worthlessness is back and now we’re just back to smoking pot or binge eating, or doing something stupid impulsively. Like take another drug. I just don’t know what to do with myself if I’m not kept busy. Even creative outlets fail me because I fail to meet my own standards