If you're looking for a first book on Borderline Personality Disorder, choose this one: it is grounded in the latest biological research, decades of on-the-ground experience, and a detailed prescription for action. Both great context and great application. If you've read any other books on BPD, then you're obliged to read this one, and quickly: it provides real science and context and -- most importantly -- offers an action plan that works with, rather than against, the illness. Most of my research has led me to angst and despair; Valerie Porr's book has given me new hope by enabling me to understand, encouraging me to accept, and equipping me to act.