Revenge

Some say it's a dish best served cold. Recent research indicates that for your own well being it's a dish that generally shouldn't be served at all.

From the American Psychological Association...

Revenge comes at a price. Instead of helping you move on with your life, it can leave you dwelling on the situation and remaining unhappy, psychologists' research finds.

Results suggest that, despite conventional wisdom, people—at least those with Westernized notions of revenge—are bad at predicting their emotional states following revenge. The reason revenge may stoke anger's flames may lie in our ruminations, he says. When we don't get revenge, we're able to trivialize the event, he says. We tell ourselves that because we didn't act on our vengeful feelings, it wasn't a big deal, so it's easier to forget it and move on. But when we do get revenge, we can no longer trivialize the situation. Instead, we think about it. A lot.

"Rather than providing closure, it does the opposite: It keeps the wound open and fresh," he says.