What are the conflicts in the book The Perks of Being a Wallflower?

man vs himself. Charlie has a constant stream of thoughts, and most of his thoughts result to an anxiety or panic attack because he is an over thinker. He puts himself in a place where he doesn't need to be. Near the end of the book he ends up in the same place where he started, which is the hospital. Why? Charlie is obsessed with these thoughts that he cant control.