Rick Hanson, PhD , is a psychologist, senior fellow at the University of California, Berkeley's Greater Good Science Center, and New York Times bestselling author. His books have been published in thirty-three languages, and include Making Great Relationships, Neurodharma, Resilient, Hardwiring Happiness, Buddha's Brain, Just One Thing, and Mother Nurture -with more than a million copies printed in English alone. His free newsletters have 250,000 subscribers, and his online programs have scholarships available for those with financial need. He's lectured at NASA, Google, Oxford, and Harvard, and taught in meditation centers worldwide. An expert on positive neuroplasticity, his work has been featured on BBC, CBS, NPR, and other major media; and he's the cohost of the Being Well podcast, downloaded over fifteen million times. He began meditating in 1974, and is founder of the Global Compassion Coalition as well as the Wellspring Institute for Neuroscience and Contemplative Wisdom. He and his wife live in northern California and have two adult children. He loves the wilderness and taking a break from emails. Richard Mendius, MD , is a neurologist, and cofounder of the Wellspring Institute for Neuroscience and Contemplative Wisdom. He taught medicine at University of California, Los Angeles and Stanford University in Palo Alto, CA. He also teaches weekly meditation classes at San Quentin State Prison. He and his wife have three children. Jack Kornfield, PhD , is cofounder of the Insight Meditation Society in Barre, MA, and a founding teacher of Spirit Rock Meditation Center in Woodacre, CA. He is author of many books, including A Path with Heart and The Wise Heart.