How can I describe the mood of the book?

I would describe the general mood of the book "The Catcher in the Rye" as depressing and negative. Most of the time, I felt quite bad for Holden. Often he talks about how lonesome and depressed he is and a few times even talks about how he wants to commit suicide. His hero complex, of wanting to preserve childhood innocence, is almost sad in a way and this makes Holden very cynical about adulthood. Holden also is very negative and doesn't have a problem pointing out multiple flaws in the people he meets, because of the expectation he has for society as a result of the death of his younger brother Allie. Holden idolizes Allie for is childhood innocence and would like for all of society to have this innocence, but this is not the case. Holden's journey was a long and hard one; flunking out of school, the loss of a loved one which effected him very deeply and having trouble growing up, this story is often sad but one that most teenagers can relate too. I also felt the mood was suspenseful, as Holden's actions and words often contradicted other things he said or did. This would make me wonder what he was going to do next. It's not only until the very end does the mood take a little bit of a lighter turn. Holden starts to realizing that he has to stop living in the past, and let people decide what to do with their own lives, instead of trying to save them from adulthood. Reader's also realize at the end of the book that Holden is receiving mental help for his depression. Overall, this book had a depressing and negative mood and never really took a turn for the "best" until the end. Even when the book took a lighter turn, the book still was sad and I still felt bad for Holden. I think this is why this book was so interesting, as the mood was quite different from other books I have read.