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Diane Musho Hamilton Roshi is a mediator, author, and teacher of Zen. She has been a practitioner of meditation for more than 40 years. Diane began her studies in 1983 at Naropa University with Choygam Trungpa Rinpoche, and became a Zen student of Genpo Merzel Roshi in 1997. In 2003 she received ordination as a Zen monk with her husband Michael Zimmerman, and received dharma transmission from Roshi in 2006. In 2018 Diane received the final seal of Inka from Sidney Musai Walter Roshi, also a successor of Genpo Merzel Roshi.


As the first Director of the Office of Alternative Dispute Resolution for the Utah Judiciary, Diane established mediation programs throughout the court system and won several prestigious awards for her work in this area. Her accolades include the Utah Judicial Administration Award, The Utah Council on Conflict Resolution Peacekeeper Award, The Peter W. Billings Award from the Utah State Bar for contributions to the area of alternative dispute resolution, and the Brigham Young University Center for Conflict Resolution Peacemaker Award.

Diane facilitates Big Mind Big Heart, a process developed by Genpo Merzel Roshi to help elicit the insights of Zen in Western audiences. She has worked with Ken Wilber and the Integral Institute in Denver, Colorado, since 2004. She is the founder and lead trainer of the Real LIFE Facilitator Program which certifies practitioners in a developmental approach to group facilitation.

She is the author of Everything is Workable: A Zen Approach to Conflict Resolution (Shambhala Publications, 2013) and The Zen of You and Me: A Guide to Getting Along with Just About Anyone (Shambhala, 2017). Her latest book is Compassionate Conversations: How to Speak and Listen from the Heart, with Gabriel Wilson and Kimberly Loh (Shambhala, 2020).

She is also a contributor to The Hidden Lamp: Stories from Twenty-Five Centuries of Awakened Women (Wisdom Publications, 2013) and The Dharma of Dogs: Our Best Friends as Spiritual Teachers (Tami Simon, ed., Sounds True, 2017), and Radical Compassion: On the Path of Boundless Love (Shambhala Publications, 2014).