The document discusses self and self-presentation. It begins by exploring how individuals develop a sense of self through self-differentiation, role-taking, and interactions with others. It then examines how identities are formed based on roles, social groups, and how the self is situated in different contexts. The document also analyzes how individuals enact identities through behaviors and choices. It discusses self-esteem and how people present themselves tactically to others through impression management both in everyday life and online.