Self-monitoring plays an essential role in behavior change for health by enabling individuals to track their progress and identify patterns. Through techniques such as keeping a food journal or using fitness apps, individuals can gain insights into their habits and areas needing improvement. This awareness fosters accountability and helps reinforce positive behaviors, making it easier to stick to fitness goals. Self-monitoring also allows for timely adjustments to strategies, enhancing the likelihood of achieving desired outcomes and promoting lasting change in health behaviors.