Robyn D. Walser, PhD, is director of TL Consultation and Psychological Services, and codirector of Bay Area Trauma Recovery Clinical Services. She works at the National Center for PTSD, developing and disseminating innovative ways to translate science into practice; and serves as assistant clinical professor in the department of psychology at the University of California, Berkeley. As a licensed clinical psychologist, she maintains an international training, consulting, and therapy practice. Walser has authored and coauthored six books: The Heart of ACT, Learning ACT, The Mindful Couple, Acceptance and Commitment Therapy for the Treatment of Post-Traumatic Stress Disorder and Trauma-Related Problems, and ACT for Clergy and Pastoral Counselors.Manuela O'Connell is an acceptance and commitment therapy (ACT) therapist and trainer who conducts workshops and seminars in English and Spanish. She is professor at Universidad Favaloro at Buenos Aires, Argentina, and holds ACT and mindfulness workshops for the general public. She has written a self-help book in Spanish titled Una vida valiosa, and was a contributor to TheHeart of ACT.