Hello gloyster,
hey, I remember back in the eighties, when i was your age, i had a dark phase, too. Been out of schol for a while and around that age, you realize life's not all and only fun and games and having a ball with your buddies. II found joy in working on a honorary basis in a youth center, and joining a soccer hobby team.
If you try music, that helps too. Nothing getting in a fantastic state of mind like rocking with your band and later hang out with people. I guess I don't have to mention it des miracles with females ^^