I need help, because I think I'm in a voilently angry state.

Everyone wakes up feeling like hell sometimes, that's completely normal. To counter that i often do yoga 或者 go for a run before i do anything else. This may sound wierd but when i mean anything else, i mean even before i get out of my sleepwear. It cheers me up for some reason.

If 你 don't like Teen mom, then don't watch it. I'm sure there are plenty of other things you'd like to do then watch that. Read a book, play a game, play patience with a pack of cards, draw 或者 even ring a friend for a few 分钟 :)
I don't understand how 你 can hate forests, i 爱情 them, but each to their own. I think you're focusing on the negative side of the trip, rather then the positive side. When 你 catch yourself thinking bad thoughts about something/someone, why not try to counter it 由 also giving a positive thought. For example - 'i hate the trees as they're so bland'- 'but that 松鼠 in one is pretty funny'. Not the best example i know but it's all i could come up with XD

As for the attacking someone part - obviously you're feeling angry, so have 你 thought about putting on some 音乐 and punching and biting a 枕头 until you're tired? It doesn't solve the over-all problem, but it does give 你 time to think things through and burn off some energy so 你 won't fly into a rage at the slightest thing and get into trouble.
Try to keep calm when things get out of hand, if anything happens (like an argument) and 你 feel you're going to speak out of turn 或者 冲床 someone, just say 'excuse me a moment' and walk out and solve it from there. Don't forget to lock the door after 你 (if possible) the worst thing for anyone to do is follow an angry person in the room while they're trying to sort themselves out and continue an argument.

As far as the tv goes today. Lay down the rules they can watch teen mom, if 你 can watch an 小时 of any programme 你 choose, and then 你 take it in turns from there.