The first 10 seconds after being angered is the most critical. Get past that constructively and you can probably steer yourself rationally to a good conclusion. Never make any decisions when you are being influenced by anger. You will most likely regret the results. There are 2 steps in my opinion.
# 1: Put things in perspective- everything is from H-shem. The same gracious H-shem that gives us so much (learning to count your blessing is a prerequisite for this) also gave you this potch in his infinite wisdom. This should help to intellectualize it. In order to get your emotions back in check…
# 2: Do something distracting and enjoyable-go onto the cr, listen to some great music etc. Anything to get your mind off of what happened and focus on something else. Then let time do the rest.
Good luck!