This study used a nationally representative sample of young people in Germany from the German Socio-Economic Panel to examine how demographic and socio-economic characteristics of the young persons and their parents, personality traits of the young persons, quality and quantity of relationships, the parent's level of life satisfaction, and other measures of satisfaction for the young person are related to the initial assessment of life satisfaction by the individual at the critical point of transition from adolescence to adulthood. The results indicated that consistency existed across different domains of satisfaction, specifically satisfaction with life and satisfaction with grades. A strong pattern of association was also observed between the subjective well-being of the adolescents and variables that measured different dimensions of the quality and quantity of interpersonal relationships, including relationships with parents.