The first book for the general public about mindfulness and medical practice, a groundbreaking, intimate exploration of how doctors think and what matters most—safe, effective, patient-centered, compassionate care—from the foremost expert in the field. As a third-year Harvard Medical School student doing a clinical rotation in surgery, Ronald Epstein watched an error unfold: an experienced surgeon failed to notice his patient’s kidney turning an ominous shade of blue. In that same rotation, Epstein was awestruck by another surgeon’s ability to avert an impending disaster, slowing down from autopilot to intentionality. The difference between these two doctors left a lasting impression on Epstein and set the stage for his life’s work—to identify the qualities and habits that distinguish masterful doctors from those who are merely competent. The secret, he learned, was mindfulness.