Received March 16, 2005; accepted June 9, 2005. Dr. Gabbard is Brown Foundation Chair of Psychoanalysis and Professor of Psychiatry at Baylor College of Medicine, Houston, Texas. Address correspondence to Dr. Gabbard, Baylor College of Medicine, 6655 Travis, Suite 500, Houston, TX 77030; ggabbard@bcm.tmc.edu (E-mail). Copyright 2005 Academic Psychiatry. For more than one-quarter of a century, I have been trying to teach psychotherapy to psychiatric residents. When I moved from Menninger to Baylor in 2001, I became Director of Psychotherapy Education, and I started to think more systematically about what I’d learned from teaching psychotherapy. Part of my duties at Baylor involves being Director of the Baylor Psychiatry Clinic, where I have weekly case conferences with the PGY-III residents and teach them how to think about psychotherapy and formulation in the outpatients they are seeing. This experience has provided me with a laboratory to experiment with different teaching techniques. At the same time, Bob Hales, M.D., Editor-in-Chief of American Psychiatric Publishing, Inc. (APPI), Books, wanted me to edit the Core Competency in Psychotherapy Series for American Psychiatric Publishing. Since I was writing the text on long-term psychodynamic psychotherapy for that series, I had to think systematically about what works and what does not work in the teaching of psychotherapy. At some point, I recognized that I had learned as much from what not to do as much as I had from what worked. We all learn by making mistakes. In light of that fact, I would like to share what I’ve learned not to do in this article. I am going to provide you with a list of common mistakes in teaching. I have made many of them myself, so I am in no way exempting my own teaching from this catalog of errors. Rather than telling you what you should do, I am using the “thou shalt not” method designed by Moses when he came down from the mountain with the bronze tablets. Hence, I am going to provide a list of precepts that suggest what not to do. Teach Psychotherapy as Though It Is Entirely Isolated From the Rest of Psychiatry