i know where you're coming from. or at least, i thnk i've got a pretty good idea.
the beast inside doesn't have to grow tame and dim to be reborn, nor does it have to personify anger alone. rage is the easiest way for you to loose control and hand the reins over to... whatever you want to call the thing inside.
try letting the beast out and take it for a walk, give it a bone to chew on, make it your friend. to pretend you can bury it is to be dishonest to yourself.

allow it to come out and play with your life sometime when you're not pissed. see what it does when it's given control when you're joyous.

er, um... good stuff, i mean. thanks for writing it, and further applause for posting this. feels damn good to hear someone else describe a so familiar emotion.
thanx, honestly