This book from Carlo C. DiClemente, co-developer of the Transtheoretical Model (stages of change),  provides a look at the entire continuum of addictive-behavior change. It examines how people establish and reinforce new patterns of behavior when developing or trying to end an addiction. The book addresses why, when, and how to intervene to bolster recovery.

A must-read for anyone who wants to utilize the Transtheoretical Model of Change (TTM), also known as "stages-of-change." These guys coined the phrase and wrote the book. Use as a complement to motivational interviewing.