I waited to read this one. I was hesitant. I love stories about books and libraries... this was different. It was a dark theme (mental health, suicide, substance abuse, terminal illness) which I think the point of the book was about how life can change from dark places and changing perspectives. It was alright, I am not sure if I'd read it again.  I'll wait and see, the only other books of Matt Haigs I have read were children's books and so I think it could also be the shock of different genres of writing (kid vs adult, light-hearted vs heavy topic)