Welcome to WP!
Well i do know what its like to battle severe depression, *i hope my new medicine finally stops my winter depression* I'm not sure what you can do, i do fine without having a job or school, but i do get therapy on a regular basis, and if something goes terribly wrong i can get admitted somewhere just in case :o My advice would be to go out, and do stuff, fun stuff, things you like, i go out every day for a walk of almost 2 hours and it helps me, but i love being outside anyway :x Anyway that's all the advice i have for now, sorry if you already tried it, and you're far older then me but i wanted to atleast try to help ><
I hope you're having a nice day!