What are you exactly asking for advice about?

It sounds to me like you're wondering if its okay to "let it out." I'd say that it is. Get a punching bag. Beat the shit out of it. And not for the simple reason of "beating shit = feeling better." I mean, sure it does, but the reason is that you should do it to the point that you are physically exhausted, and you don;t have the energy left to be pissed. Also, physical exercise releases endorphines, which I can't spell properly, but for all intents and purposes are the chemical your brain releases to make you happy. Also, do it without gloves. If you can punch hard enough, the pain in your hands will "snap you out of it" to an extent.

(If you don;t have a punching bag, than brick walls are a nice substitute, although not very smart. Try running.)

Moral: The destructiveness that comes from anger is 100% normal, and its okay to express it. Just do so towards something that can handle it.