This article represents an empirical study of adolescent's self-relation in a family where the mother has re-married. In many studies self-awareness and its functional aspect – self-relation – are selected as new stages in adolescence. The family is considered to be the most important factor in a child's and adolescent's personality development. Literature reviews on the specifics of a child's development in a family with a second marriage present some of the problems facing the parents and children in it. In the present article, problems of relations between children and parents are discussed. A principal finding of this report is that adolescents from families with a stepfather have a less flexible self-relation than adolescents from families with the biological father; to have a positive self-relation they need defence mechanisms. At the same time, analysis of adolescents' drawings shows that adolescents from families with a stepfather exclude themselves from the family system. In addition, the article discusses gender differences in self-relation in two types of families.