Psychological science has made significant progress exploring the role of motivation in recovery from substance abuse and dependence over the past 20 years. Although recovery is complicated by physiological and psychological dependence, the intentions and motivation of the abuser are a critical part of this process. Motivation for change plays an important part in the process of recognizing the need for change, seeking treatment, and achieving successful sustained change. This article reviews how motivational readiness to change, as conceptualized within the transtheoretical model, contributes to the process of recovery. Important distinctions between intrinsic and extrinsic motivation, imposed and intentional change, and readiness for change versus readiness for treatment are highlighted.