I do know how you feel. For a while I used to do things like that. I threw my phone at the wall after an argument with my ex girlfriend and broke it. I could never get it replaced. I also have broken other things, but I controlled myself. If I broke anything it was normally just some little thing on the floor or something random, nothing big, other than my phone. Sometimes I would take the anger out on myself too, of course... Back when I would SI. I guess that is what kept me from taking it out on anything else. The good thing is that you don't take it out on anyone else or your pets, a lot of people do. I never did either so that's a good thing. I just hope it gets better for you, but I feel your pain.