Maybe you need to find something to vent/release your anger.

Pick a sport or a relaxation technique, meditation,get some alternative treatments like head massages,foot massages,aromatherapy etc.

Or you could vent here and not name names so that it might help you see where the anger comes from or started from and then work your way out of the anger and bitterness.

Maybe you just need to find "you",
Where you are and what you are,who you want to be and where you wish to go from here.

Discuss with your partner and find a way out together.