Self-disclosure is intrinsically rewarding and extrinsically valuable. It can lighten our burden, make abstract negative emotions more concrete, and build affiliation. So, to begin to harness your regrets to improve in the future, try any of the following: Write about your regret for fifteen minutes for three consecutive days. Talk about your regret into a voice recorder for fifteen minutes for three consecutive days. Tell someone else about the regret in person or by phone. Include sufficient detail about what happened, but establish a time limit (perhaps a half hour) to avoid the possibilities of repetition and brooding.

The Power of Regret by Daniel H. Pink