Many healthcare professionals support the idea that weight control and healthy eating should be emphasized early in a person's life to prevent obesity during middle and older adulthood. Unfortunately, although many weight loss programs are available to consumers, few are successful. Recently, constructs of behavioral theories have been integrated into weight loss programs and used to promote changes in health behaviors. In this study, methods used to increase self-efficacy for weight loss were incorporated into a 12-week program designed for weight loss promotion in young adults. Results found that as self-efficacy improved, eating habits improved and weight loss was greater. This study supports the hypothesis that using behavioral techniques to improve self-efficacy can be effective in weight loss promotion and can produce positive outcomes.