Copper,
I, too, have found cognitive therapy to be of the greatest help with anger/rage/frustration. I wholeheartedly agree that semantics are important.
Yes, even after all these years I have my inner rage moments. I just don't beat myself up over it like I used to. And I do my best to let my wife know when I'm having a "head-banging" moment so she knows it may not be a good time to speak to me. She and I know I'll be back in a while to a better mood. I just have to go to a quieter space and have a little talk with myself. The quality of self-talk is of the utmost importance.
No, it isn't easy. But no tumors yet from holding it in.