Regret has a purpose. It's like the oil light on the dashboard of your life, telling you something needs to be fixed. So fix it. And feel better.

A poor self-image is the magnifying glass that can transform a trivial mistake or an imperfection into an overwhelming symbol of personal defeat.

Surprisingly, it's forgiveness, not guilt, that increases accountability. Researchers have found that taking a self-compassionate point of view on a personal failure makes people more likely to take personal responsibility for the failure than when they take a self-critical point of view. They also are more willing to receive feedback and advice from others, and more likely to learn from the experience.

Learn to accept your limits and you'll become a happier person.

What sentence will you choose to impose on yourself? Are you willing to stop suffering and making yourself miserable when your sentence has expired? This would at least be a responsible way to punish yourself because it would be time-limited.

People who are prone to guilt tend to work harder and perform better than people who are not guilt-prone, and are perceived to be more capable leaders.

Don't apologize for what you think you did wrong. Apologize for what they think you did wrong.