I find no reason to live?

im tired of my life and see no reason to continue. im so depressed because of school and some of the ppl in my life. my parents just say your almost out of highschool but that doesnt help. i find myself crying myself to sleep each night and i feel like im trapped in a cage with no one to help me or talk to me or let me out. im so fed up with my teachers yelling at me when all the other kids are the ones misbehaving. my ex gf keeps txtn me and wont leave me alone and it just seems to hurt after she's done txtn me. all my family wants to do is stay home when i just want to get out. they always say "we'll see" or "maybe" or "in a little bit." when i ask them if we can go do something. i dont look forward to anything anymore. i just want to die in my sleep. if anybody has advice, i could use a friend.