Hi Fuzzybear. I hope you don't mind me answering, but I can very much relate to dealing with rageful periods in my bipolar illness.

Beyond meds, some coping skills do help me a lot. I rejected them, initially, but with practice have recognized their value. DBT skills are especially helpful for this. I use the following:

* Refocusing my attention ("Turn the mind") - Sometimes I have to push myself to work on a project (or do something else) that requires special or even hyperfocus. Cooking/baking is one of my go-tos. Writing on other topics than what the anger is about also helps me. Or even simply forcing myself to be mindful of something more positive (listen to bird songs outside).

* Physical activity - This helps me refocus and/or works as a tension reliever. "Walk out" or "dance out" the anger.

* List positives - Maybe not relating to what is angering me, but something better. For example, I have/do "these many good things". List.

Then there is problem solving, which is a DBT skill and common CBT skill, in the form of challenging cognitive distortions. How bad is "it" really? Need it affect me long-term? How can I either fix or let the feeling/anger go (steps to do so)? Do I deserve for this to hurt me psychologically and physically? [Hint: The answer is no.]