I have a terrible temper and the only thing that seems to help is acknowledging my anger is disproportionate to the situation and I also try to walk away (which is sooooo hard!) and tell myself I will deal with the matter once calm.

It is also helpful to acknowledge flaming up gets you nowhere other than some very short lived satisfaction at the time. If you can, acknowledge the anger, walk away and tell yourself you will deal with it once you have calmed down. Also remind yourself how hurtful this is the person on the receiving end of the rage. I don't know about you but I had terrible feelings of remorse and guilt after a flare up and also remind myself of that.

I wish you all the best and hope this passes quickly for you!