When most of us do something we shouldn't have -- or when we didn't do something we should have -- we generally feel guilty. However, in most cases, guilt is ineffective expiation. That is, we let ourselves off the hook because we beat ourselves up. The issue is that this doesn't prevent the bad behavior from recurring in the future. In this episode, I'll speak briefly on the emotion that -- if sufficiently cultivated -- can lead us in the direction of actual and sustainable behavioral change: contrition.