The mistake might have taken one second, perhaps when we impulsively press “send” on a really bad e-mail. It might have taken years of festering in a toxic relationship. But suddenly we realize that we have totally blundered, and are filled with regret. Such failures can lead us into vain replayings of our mental tape-loops, about how stupid I sounded when I made that remark about my colleague. But compunction over our serious errors can sometimes serve as a promising lead-in to a more thorough and constructive inventory of our lives.

How to Be a Sinner
Peter Bouteneff