Resentment brings out the worst in us, causing us to think and behave in ways we’d never admit to. We might sabotage a coworker’s promotion by slandering his or her reputation. Or shame a family member by bringing up an unkind action from the past just to torment him or her. We know they don’t deserve our mean-spirited actions, but we’re so miserable that we want them to suffer too – especially if they’re receiving the praises and “attaboys” we crave.