This cognitive behavioral therapy (CBT) workbook is a detailed, step-by-step account of how to do scientifically supported treatment with adults experiencing illness anxiety. Written by two practitioners with years of specialized training and expertise in CBT for anxiety, this book provides a comprehensive overview of illness anxiety disorder and an exposure-based framework to target fear and avoidance. Detailed exercises and homework are included throughout, as well as charts, diagrams, and a relapse prevention plan. This workbook aims to give illness anxiety sufferers the skills needed to work through the therapeutic journey in decreasing anxiety and beginning recovery. This book is essential for those with illness- or health-related anxiety looking to do self-help or to use with therapists in sessions, along with practicing clinicians who need specialized guidance.