Do you struggle with instability in your emotions, self-esteem, relationships, or behavior? If so, then you might have borderline personality disorder (BPD), a serious and relatively common mental health condition that is highly responsive to treatment. People with BPD can find it challenging to effectively mentalize - to "read," access, and reflect on mental states in themselves and other people. This book is all about 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 you how to apply MBT's techniques in your everyday life, so that - like the tens of thousands of patients whose lives have already been changed by MBT - you 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 you through the core elements in MBT as a therapy, outlining the therapeutic strategies that make MBT so effective. Purchasers receive access to a webpage, so that you can download and print additional copies of worksheets and chapter reviews. This book will be helpful for people with BPD and other mental health conditions, family members affected by BPD, clinicians seeking to teach their clients about MBT, and members of the general public who are curious about mentalizing and MBT.