I have discovered an antidote for anger recently-- quite by accident, I will admit. (You can probably guess how I discovered it after you read my idea.)
Here's what you do:
Write an email to the person who hurt you. Get all your feelings for them out. Tell them exactly what you think and how you feel. Tell them everything. Don't hold back.
Then put the email in your "to be sent" file. (DO NOT make the mistake of sending it-- and if you do that by accident, well, it is not my fault-- so don't send me angry emails about it!!)
Then get up, walk away, and go on with your life. You can have that sense of "Humph, I told her (or him)!" Even though technically, you never did.
Finally, wait a few days or a few weeks, then go back and read what you wrote. Be glad you didn't send it. Be glad that you didn't say those angry words that were in your heart to say. Press "Discard draft" and then get up and walk away, going on with your life, this time with a spring in your step. Praise God that you didn't tell him or her off. Praise God that, because of His unfailing love for us, we can learn to forgive each other, extending the grace that we so desperately need for ourselves.