I love books by John Green, but didn't love this. The main character has major anxieties and this comes across very well; the internal voices and comparison to external world (friends) was great.Those few friends were okay, though fairly 2D. The main buddy, Daisy, has motivations that I still don't understand. Then there's the mystery, which feels very flat to me. I'm not sure if it even rises to the level of MacGuffin.

Outside of the mystery, the major story catalyst happens more than 3/4 of the way through the book, which feels very late. The changes from this feel a little rushed, but realistic. Also well done was the spiral, and title comparison to turtles all the way down. We really inhabit this character's uncomfortable world.

It may take a reread to really enjoy this book, but I doubt it will rise to the heights his other books have for me. For now, 2.5 stars - halfway between "I liked it" and "It was OK".