Look up Mindfulness & Grounding Techniques. With enough practice you can learn how to centre yourself.

I have a pretty good handle on most of my "symptoms", but I'm admittedly not too good with the anger myself at present. I will now attempt to hold my breath (literally) before DECIDING how to respond the next time I get really angry...
Which is tomorrow I can assure you

Why hold my breath? Well because I can't exactly have a *****fit while holding my breath and breathing exercises while angry just doesn't happen for me at this stage.