Strenuous physical activity is an incredible way to release your anger, especially if you feel you're at the breaking point. Exercising also releases endorphins, the "feel good" hormones, which will help you feel more at peace.
Lifting weights, running, and playing sports are great ways to blow off some steam.
Anger arises more often if you're tense and stressed. Study different relaxation techniques that will help you to unwind.