Borderline personality disorder (BPD) is a serious and relatively common mental health condition that is highly responsive to treatment. People with BPD can struggle with instability in their emotions, self-esteem, relationships, or behavior, and can find it challenging to effectively mentalize-to "read", access, and reflect on mental states in themselves and other people.This book addresses mentalization-based treatment, or "MBT", one of the leading evidence-based therapies for people with BPD. As the first book for non-clinicians about MBT, it shows users how to apply MBT's techniques in their everyday life, so that-like the tens of thousands of patients whose lives have already been changed by MBT-they can get relief from the suffering of borderline personality disorder. With the help of worksheets, mentalizing prompts, and case examples from actual treatments of patients with BPD, the book walks users through the core elements in MBT as a therapy, outlining the therapeutic strategies that make MBT so effective.