Using your non-dominant hand to do habitual tasks for two weeks can help calm your temper. Studies show people with anger issues also lack self-control, which can be strengthened like a muscle, and the annoyance of doing things with the wrong hand.
DEAL WITH YOUR SHIT. Deal with your own shit first of all. Understand your dysfunction, your issues, your anger and your harmful behaviours. Deal with it. Don't bring all your shit to other people. Don't foist it upon relationships, friendships,.
Sometimes we display our anger to friends, family and others. Usually our anger is a surface emotion on top of something else. Original description: "The Gottman Institute the anger iceberg talking of anger as a secondary emotion"