Writing out how you're feeling. I've written about anger and ended up ripping gashes in the page/s with my pen, I was so enraged. It's essential to write with your own hand, not to type.
Google "anger poems" - all sorts of interesting stuff comes up.
Throw rocks in a river.
Run, and with every step think about how enraged you are. Keep running, keep feeling angry, until you're exhausted.
Clean things. Nothing works like mopping a floor to feel angry feelings and let them work through.
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