When it comes to helping others with psychological problems, good intentions are essential. Still, as this immensely valuable volume edited by Stephen Hupp amply illustrates, good intentions are not sufficient. The history of medicine, including psychiatry, is a sobering reminder that even the best-meaning practitioners can do terrible harm. Most historians of medicine maintain that until about 1890, the substantial majority of physical procedures were useless or iatrogenic (Grove&Meehl, 1996). In the early twenty-first century, it is all too easy to forget that for decades or even centuries, such since-debunked interventions as bleeding, blistering, purging, leeching, bloodletting, spinning, and the like were widely accepted by many practitioners as effective for the treatment of mental disorders (Gambrill, 2012). Today, these “treatments” understandably strike most of us as barbaric and inhumane. Yet almost certainly, the health care providers who provided them were convinced that their nostrums were helpful. They meant well.