The daily diary method was used to examine the implications of adolescents' daily assistance behaviors for both positive and negative aspects of psychological well-being among an ethnically diverse sample of 752 adolescents of ages 14 to 15 years. Results indicated that, contrary to the expectations of some observers, providing daily assistance to the family generally was not stressful for adolescents. Rather, assisting the family was associated with higher levels of happiness due, in large part, to the sense of role fulfillment it provided the adolescents. Few individual or group differences were observed in the association between family assistance and psychological well-being. These results suggest that family assistance serves as a meaningful activity in adolescents' lives by creating a sense of connection to the family. (Contains 5 tables.)