What is the theme in Ten Little Indians by Sherman Alexie?

Running throughout this collection of stories is the central issue of self-esteem. Corliss Joseph has it, but her parents and relatives on the Spokane Indian Reservation don't ("The Search Engine"). Corliss has enough self-esteem to live alone at college because she doesn't want a roommate, but her parents' lack of self-esteem is evident in their obsessive desire for her to become "somebody" because of her college education. By that, they mean anything other than the poet she aspires to be. The poets she most admires, like W.H. Auden and Harlan Atwater, seem to have the idealized courage of self-esteem.