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John is a Canadian-American psychotherapist, executive coach and spiritual director living in Los Angeles and Mexico. Formerly living in Nashville from 1996 through 2023. He specializes in Couples Therapy, Therapy/Coaching with Men, Intensive Therapy for Couples in Crisis and Executives in Transition, Spiritual Abuse Recovery.


Since 1980 he has worked with adults and couples who desire psychological healing and more meaningful relationships. He has practiced in Middle Tennessee, Southern California and Canada.


His therapeutic approaches include Psychodynamic Psychology, Family Systems Therapy and Mindfulness Psychology.

He is a Marriage and Family Therapist (Licensed in Tennessee), AAMFT Approved Supervisor and Executive Coach. 


Diane Belding Marshall is his wife and life partner of more than 40 years. She is also a Marriage and Family Therapist.

Fuller Seminary’s School of Psychology

(Marriage and Family Therapy) 

Bethel University-St. Paul

(Sociology and Social Work)

Masterson Institute

(Psychodynamic Therapy) 

Manresa Jesuit Retreat House

(Spiritual Direction)

In addition, San Francisco Seminary, Westmont College, Wheaton College

Education / Training

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