It is a YA non-fiction book and the author bought it to life and knew what he was writing about because he also mentions that the book is kind of based on his own experience's in a mental hospital and coping with depression (which is what the book is based on), and I would recommend this to anyone.
There is also a film based on the book, which I thought was quite good based on a separate level meaning if you're not comparing it to the book, as the film kind of begins when you get to chapter 19 in the book, then you'll start recognising what is happening.
The book made me laugh and I swear my eyes teared up a bit, which is quite a hard thing to do is make me cry.
"People are screwed up in this world. I'd rather be with someone screwed up and open about it than somebody perfect and ready to explode"