You are using an older browser version. Please use a supported version for the best MSN experience.

Harvard psychiatrist says this is the secret to happiness

Duration: 02:33
Dr. Robert Waldinger, director of the Harvard Study of Adult Development and co-author of "The Good Life," discusses lessons learned from the world's longest scientific study on happiness.
More From CNN

UP NEXT

NOW PLAYING: wellness

Harvard psychiatrist says this is the secret to happiness

Harvard psychiatrist says this is the secret to happiness

UP NEXT

image beaconimage beaconimage beacon