I first learned about the field of pediatric cardiology when I heard a lecture about congenital heart disease early in medical school given by the famous pediatric cardiac surgeon, Dr. Aldo Castaneda. Seven years later, I was a fellow in the Department of Cardiology at Boston Children’s Hospital working with him, and other amazing mentors such as Drs. Barry Keane, James Lock, David Wessel and many others. Since then, I have been fortunate to have opportunities to contribute in many aspects of pediatric cardiology, including patient care, academic research, the development of new procedures in treatment of arrhythmia, and the organization and teaching of cardiac care around the United States and globally. I have also had the honor of assuming leadership roles over my years in practice in the Pediatric and Congenital Electrophysiology Society, the Heart Rhythm Society, and the NIH Pediatric Heart Network. Together with my colleagues, I believe we have built here at Boston Children’s one of the finest and most advanced programs in the world in our particular subspecialty of “EP” – the diagnosis and treatment of heart rhythm problems in children and in congenital heart patients.