Dr. O’Connor is the author of three books, Undoing Depression: What Therapy Doesn’t Teach You and Medication Can’t Give You, Active Treatment of Depression, and Undoing Perpetual Stress. For fourteen years he was executive director of the Northwest Center for Family Service and Mental Health, a private, non-profit mental health clinic serving Litchfield County, Connecticut, overseeing the work of twenty mental health professionals in treating almost a thousand patients per year. He is a practicing psychotherapist, with offices in Canaan, Connecticut, and New York City. He currently is working on his fourth book — about happiness.

Dr. O’Connor is a graduate of Trinity College in Hartford and received his MSW and Ph.D. from the University of Chicago.  Afterwards, Dr. O’Connor performed his postgraduate work at the Institute for Psychoanalysis and the Family Institute. He has worked in a wide variety of settings, from inner-city clinics to wealthy suburbs.

Dr. O’Connor and his family live in Lakeville, Connecticut. He participates as a leader and a member in a free self-help group in Sharon, Connecticut, for victims of depression.