Regret, Not Guilt
The difference between guilt and regret is that the guilt never faces the wrongdoing straightforwardly. There's just this strong emotion of "I wish it hadn't happened. I wish I hadn't done it. I wish I had never gotten angry." Or, "I wish I hadn't done that embarrassing thing," and so on. Regret is the opposite of guilt. We acknowledge it, we expose to ourselves that we have done something harmful, and how it came about from our ignorance, but we don't get caught in emotions or story lines.
Dzigar Kongtrul Rinpoche, Tricycle, Winter 2004
