Robert A. Emmons, Ph.D., is the world’s leading scientific expert on gratitude. He is a professor of psychology at the University of California, Davis, and the founding editor-in-chief of The Journal of Positive Psychology. He is also the author of the books Gratitude Works!: A 21-Day Program for Creating Emotional Prosperity and Thanks! How the New Science of Gratitude Can Make You Happier.
Brother David Steindl-Rast -- Renowned spiritual leader and Benedictine monk, Brother David
Steindl-Rast trained for 12 years in the Benedictine monastic tradition
before receiving permission to practice Zen with Buddhist masters. See more at: Brother David Steindl-Rast
Jon Kabat-Zinn -- Professor of medicine emeritus and founding director
of the Mindfulness-Based Stress Reduction program in the Center for
Mindfulness in Medicine, Health Care, and Society at the University of
Massachusetts Medical School. See more at: Jon Kabat Zinn