Absolutely amazing, truly. Most of the teen movies nowadays are mostly about drugs, heavy partying and all the profanity. This one right here talks about the issues we don't really talk about, usually neglect and that negativity leads us to do things we don't even want to do.
Suicide is not a simple issue, and we should never glorify suicide and this movie didn't even try, rather it sways to a brighter path, finding happiness in simplicity, searching for the light in the darkness and helping who needs it.
Sharing your thoughts are hard, trust me, I know. But, try it nonetheless. It helps, I know it does.
btw, I haven't read the book, only writing this after watching the movie.