Motivation plays a critical role in health behavior change by providing the necessary drive and commitment for individuals to initiate and maintain healthy practices. Without motivation, there is little incentive to alter established habits or embrace new, healthier behaviors. It influences goal-setting, persistence, and overcoming barriers associated with behavior change. Effective motivation supports self-efficacy and readiness, which are essential for adopting and sustaining health-promoting actions. Thus, motivation is a key determinant in successful health interventions and long-term wellness.

Reference: Health Behavior: Theory, Research, and Practice, Glanz, Rimer, Viswanath, 5th Edition.