Video Series If Only We Had Known: A Guide to Borderline Personality Disorder People living with the disorder and world leading experts explain Borderline Personality Disorder in ways that are clear and easy to understand. Absolutely wonderful. MARSHA LINEHAN, PHD Developer of Dialetical Behavior Therapy Extraordinarily useful for training. JOHN GUNDERSON, MD, Harvard Medical School I learned that I wasn’t alone. SPOUSE of person with BPD ALREADY RENTED? VIDEO REVIEWS BY PROFESSIONALS VIDEO EXPERTS IN SERIES VIDEO RESEARCH STUDY