Regret is not the same as guilt. It is expressed by: ‘I can’t believe I did that. It’s not like me. This is not how I am! How could I do such a thing?’ It means to see ourselves as the best we can be, and to be disappointed in not living up to that.
Yael Shahar, A Damaged Mirror: A story of memory and redemption
change-your-life, regret, teshuva