Last main part of growing up is “becoming individual”. Sam, and also Charlie, understand that being an adult means to be unique. “I'm going to do what I want to do. I'm going to be who I really am. And I'm going to figure out what that is.”. That’s the way Sam declares her readiness. But adolescence also is about doubting, “Just tell me how to be different in a way that makes sense.” The book conveys an important advice to pass adolescence: Just be yourself, find out who you are, leave your past far behind, but never forget where you started.