Psychotherapist Mark Epstein is often asked how he incorporates his Buddhist practice into his therapy sessions. His latest book offers an answer to that question. In "The Zen of Therapy: Uncovering a Hidden Kindness in Life," Epstein documents dozens of therapy sessions over the course of a year, tracing the Buddhist themes that arise. Weaving together psychoanalytic theory, Zen poetry, and the music of John Cage, Epstein presents a compelling model of therapy as spiritual...