I recently carried out a psychological exercise with the daughter.  We cut up bits of paper and wrote down all our past regrets on individual pieces, scrunched them up, then threw them into the fire.  The idea was that by burning your regrets, you let them go, you get rid of them and leave them in the past, where they belong.   It was fun, but seriously, it was bullshit!  Good idea but I fear only intense psychotherapy would work for me!