Anyone who had read the book 'The Catcher in the Rye'?

Holden Caulfield is actually concerned about protecting himself and so to do that, he alienates himself from a world he seems he doesn't belong. Instead of caring about his failing grades, he diverts his attention to other things. Alienation is both the source of Holden’s strength and the source of his problems. He really doesnt want to grow up and he doesnt want to stain the innocence of children with the "phoniness" of the adult word.