Russ Harris is an internationally acclaimed acceptance and commitment therapy (ACT) trainer; and author of the best-selling ACT-based self-help book, The Happiness Trap, which has sold more than one million copies and been published in thirty languages. He is widely renowned for his ability to teach ACT in a way that is simple, clear, and fun-yet extremely practical.Alexandra Kennedy, MA, LMFT, is a psychotherapist in private practice thirty-nine years and author of Losing a Parent; The Infinite Thread: Healing Relationships Beyond Loss; and How Did I Miss All This Before? Waking Up to the Magic of Our Ordinary Lives. She is an adjunct faculty member of John F. Kennedy University and has taught at the University of California Santa Cruz Extension and the Institute of Transpersonal Psychology. She has been interviewed in USA Today, the San Jose Mercury News, the San Francisco Examiner, and the Boston Herald, as well as on NPR's Talk of the Nation, CNN's Sonja Live, and on KQED's Family Talk and New Dimensions Radio. Sameet M. Kumar, Ph.D. is a psychologist at the Memorial Healthcare System Cancer Institute in south Broward, Florida with over a decade of experience in working with end-of-life and bereavement. He is also the author of the best-selling Grieving Mindfully: A Compassionate and Spiritual Guide to Coping with Loss, as well as The Mindful Path Through Worry and Rumination.Mary Beth Williams, PhD, LCSW, CTS, is an author, researcher, lecturer, and trainer in the area of trauma. In addition, she treats trauma survivors in private practice at the Trauma Recovery Education and Counseling Center in Warrenton, VA. Williams is former president of the Association of Traumatic Stress Specialists. She is a trainer for US Customs and Border Protection, cofounder of the proposed 501(c)(3) US Vet Source, and author of many articles, chapters, and books about trauma disorders.Soili Poijula, PhD, is a clinical psychologist, licensed psychotherapist, and director at Oy Synolon Ltd., a center for trauma psychology in Finland, where she has done pioneering work as a developer of post-trauma psychotherapy.