this is my latest coping thing that works for me.

buying sets of stuff (like board games or even dvds or ornaments), just so that when i'm angry and need to let my frustration out, I let it out on an item rather than myself (it sometimes works).

of course, the downside to this is that i spend a lot of money on it- but i now have a destroy cupboard

who else has, in the past, done this. (maybe you still do?)