Christina Feldman is a leading senior teacher in the insight meditation community, offering retreats internationally. She is a contributing faculty member in several postgraduate mindfulness programs, including the University of Exeter in the United Kingdom and Radboud University in The Netherlands. She is a cofounder of Gaia House in the United Kingdom and a guiding teacher of the Insight Meditation Society in Barre, Massachusetts. The author of numerous books, Ms. Feldman is a core teacher at Bodhi College in the United Kingdom and is deeply engaged in the dialogue between Buddhist psychology and contemporary mindfulness.

Willem Kuyken, PhD, is the Ritblat Professor of Mindfulness and Psychological Science at the University of Oxford, United Kingdom, and Director of the Oxford Mindfulness Centre. His work focuses on preventing depression, promoting mental health, and flourishing across the lifespan. Dr. Kuyken has published more than 150 journal articles and has been named one of the world's most highly cited researchers. He lives in London.