Self-efficacy, or the belief in one's ability to successfully perform a specific activity, is a key determinant of physical activity levels. People with high self-efficacy are more likely to engage in physical activity and persist in the face of challenges. Enhancing self-efficacy can be achieved through setting achievable goals, providing positive feedback, and gradually increasing the difficulty and duration of activities. Supportive environments, such as social support and accessible infrastructure, can also enhance self-efficacy and promote physical activity.