[wpietri]

I second a lot of the things here, including regular therapy, self care, and thinking about whether another job would be better. You might also consider a job-specific coach who will help you figure out how to solve workplace issues before you hit "murderous".

But one other thing that works for me is long walks. I walk until I'm no longer angry, and then I turn around and walk back. Eventually, I get worn out, both on the topic and physically.