It was a man who first taught me that the desire for revenge is really granting power to the cause of your anger. That cause still has a place in your psyche and the energy you devote to it could be better used for the furtherance of your own interests. This information was given to me in my early 20s, but it is only now, in my late 40s, that I have finally really learned the lesson. This is not to say that the stupid things men do no longer make me angry. But not as often and not for so long that I need even think about revenge.
Experience is always the best teacher.
If we learn from our mistakes, then I'm smart now because I was so fucking stupid along the way. I don't waste my time on men who piss me off enough for me to want revenge. I've learned to weed out the vermin. I have better things to do with my life than waste my time on worthless men. If you can't get past your own ego and admit what mistakes might be yours, then you'll never be any better than the vermin who piss you off so much.