I saw reviews of this book all over Instagram last year, but never picked it up myself. I have seen mixed reviews and it seems like you will either love or hate this book. 
I absolutely loved it!
It was a very easy and fast read for me. I usually need several days to finish a book, even if I completely adore it. I finished The Midnight Library in two sittings and it was such a comfort read! I'm already thinking about rereading it! 
I love the writing style, I love the characters (Molly is the cutest!!), I love the message of the book. 
Whenever I feel anxious or depressed I know that I will feel better again. You sometimes just have to wait for the bad days to pass because there is so much beauty in this world and life simply is beautiful. Do not worry about decisions you have made because no matter what, you will always have days where you feel down and that's ok. 

"There is never a perfect life. Life always comes with bad days."