Rethink Book Club: How to change your relationship with regret

"If we know what we truly regret, we know what we truly value."

Several years ago, I saw an exhibition called "Jasper Johns: Regrets" at MOMA in New York. The art was somber and intense, entangled with creases and tears. It was a very physical way to bring to life the idea of regret.

At the time - and some time since - the exhibition made me think of my own relationship with regret. When I was young, regrets tended t…