Not everyone who experiments with substance use or risky behavior becomes addicted, and many who are addicted have been able to recover. This authoritative book, now revised and updated, has given tens of thousands of professionals and students a state-of-the-art framework for understanding the journey both into and out of addiction. From Carlo C. DiClemente, codeveloper of the transtheoretical model (TTM), the book identifies the stages and processes involved in initiating, modifying, maintaining, or stopping any pattern of behavior. Grounded in extensive research, and illustrated with vivid case examples, the book shows how using the TTM can help overcome obstacles to change and make treatment and prevention more effective. New to This Edition *Incorporates 15 years of research advances, contemporary prevention and treatment approaches, and the ongoing development of the TTM. *Chapter on current developments in intervention research. *Expanded discussions of neuroscience; self-regulation; behavioral economics; self-help, mutual help, and spirituality; motivational issues; "process addictions" (gambling and sex addiction); and more. *Deeper coverage of risk and protective factors across adolescent and young adult development.