When you're angry, your emotions can override your rational thinking, taking or leading you to a Rash decision that will make you regret later.

So it's not recommended for one to make important decision when being angry.

1.Always calm down before making decisions when you are angry,
2.Alway talk to someone you trust to get advice and seek counsel

Lastly when you are angry always engage in activities to ease your mode, and take a deep breath.
Sometimes you can sleep over it,yes some time ago some one made me very angry,I was angry to the point of retaliating but then I said to myself calm,I had to sleep over it at night and when it was Dawn I feel so good.