The relationship between activity and positive self-esteem in girls 12 to 17 years of age was explored by this study. The primary goal was to determine if the positive relationship between physical activity and positive self-esteem which exists for women also exists for girls. It was also hoped that insight would be gained regarding the factors that are associated with both diminished self-esteem and the reasons girls choose to drop out of sports. Data was collected for this study in a focus group format. The girls in each focus group (n=67) were asked to fill out a questionnaire exploring: (1) confidence and perceived competence; (2) levels of activity, sports each girl participated in, reasons for being active and perceived obstacles to physical activity; and (3) career choices and the perceived viability of a chosen career. After completing the questionnaire, the girls were engaged in a discussion focusing on their views on sports, gym, confidence and risk-taking, and their concerns about becoming adults. The decline in athletic participation among adolescent girls and the link between physical activity and positive mental health suggests that girls should be encouraged to remain physically active throughout adolescence and into adulthood. Seven tables present results. (TS)