The Stages of Change Model by Prochaska and DiClemente outlines a framework for understanding and facilitating behavioral change related to alcohol use, consisting of six stages: precontemplation, contemplation, preparation, action, maintenance, and relapse. Each stage requires different strategies to support individuals, from providing information and setting goals to encouraging persistence during setbacks. The model emphasizes the importance of continual support throughout the change process to enhance the chances of successful behavior modification.