Walk briskly for at least 15 minutes. You'll feel better, and so will Fido. If you don't have a dog, go by yourself or with a friend or relative. Control your anger. Anger intensifies stress and feelings of helplessness.
Anger can build and trigger irrational thought and action.
Don't let yourself pull that trigger. Make a conscious, rational decision to do something differently or resolve the anger. Go for a walk or talk to someone. Don't just sit there and allow your anger to build up. Doing something is better than doing nothing.