This document discusses adolescent identity development and influences. It notes that identity involves establishing who one is and can be shaped by family, peers, location and clubs. Adolescence involves physical maturation and developing a self-concept and self-esteem. Self-concept refers to one's beliefs about oneself while self-esteem is how one feels about oneself. Rites of passage mark transitions in life stages, such as turning 17, 18, or 21 in Australia or having a Bar Mitzvah in Jewish culture. Key influences on adolescent identity include family, friends, sports clubs, and media.