The first time I read it I was in High School and I really related to Holden. He's basically this kid that hates everything: school, his classmates, his teachers, and life in general. As a teenager in high school it's pretty easy to think the world is out to get you, and nothing is good enough. Now that I'm 27 I look at that kid and realize that he's just a punk teenager with nothing to complain about. He has several teachers that are genuinely concerned with his welfare, his family is semi well off, his parents care a lot about him, and he's going to fancy private school.
Good book, I recommend it.