Revenge can ultimately be determined by three key questions:
1. Will it make you happy to plot about it, or carry it out, or will it eat away at you in the same manner as what caused you to think about acting it out?
2. Will revenge rectify the situation, or cause it to spiral out of control?
3. Will it bring the person back? ex. A murderer who killed someone, An ex who cheated etc.
Whatever action a person chooses there will be consequences, and sometimes they are not good. Some times you just have to, "Let go and Let God"......
It really depends on the situation...... Sometimes the best revenge is showing someone you have the strength to move on. I am a big believer in Karma, and what goes around comes back around. There is no use in making yourself sick over negative energy, when you could be the better person, and live your life in peace by moving on. I think that's the best revenge, to show someone that their actions have no control over you, and sadly some people get a kick out of making other people miserable. By showing them that you will not give them the satisfaction, will put the power back in your hands.