I have suggested this to others and it seems to help. but you need some help to do it. Get a baseball bat, preferably aluminum and some heavy gloves. Take it and a friend you trust into the bush someplace. Pick a nice big tree and start whacking it with the baseball bat. I know it will feel stupid at first but the anger will come with each swing. Just maybe you will get a breakthrough.
the reason for the friend is to let anyone else who happens along know that you are not some sort of crazy bat murderer.
The tree will understand.
I did this once and it helped me a whole lot.
IT REALLY IS OK TO STUMBLE. NONE OF US ARE PERFECT.