This story starts strong as I really liked the countdown.
I am not a fan of the F-word at all, which is something I find unecessary and puts me off; however, we do not see a lot of that which was a very good thing, or I might had stopped reading— and that would have been sad.

The second half of the book is getting better and better. I really enjoyed most of the message, but I will let you read it and get the message for yourselves.
It is a fast, easy, and enjoyable read with some pretty sorrowful experiences that the character must go through to understand life. The story is clear, even predictable, without any hidden meanings; however, it is a good story with some wonderful passages that even though the story as a whole is predictable, the character's experiences are different, and you want to live them with her.
Those who have read Blake Crouch's Dark Matter might recognize the thematic similarities of parallel universes.
I find Blake Crouch's worlds and writing more complex and more advanced, which I like much better. This book, taking away the F-word and some clearly adult themes, to me, it read more like a middle grade book. That is not to say that I did not enjoy it or I would not recommend it. I really enjoyed it and I would definitely recommend this book for anyone who would like to enjoy a lovely, feel-good fantasy world of alternate realities with a lovely message of hope and gratitude.

~ And a thought from my Christian perspective: The best and only universe to live in is the one we live in— Where our regrets, failures, sorrows, and disappointments are in the hands and heart of our God and creator, where we can trust Him with our lives, experience His Love, Mercy, and Forgiveness and after this life is over, we can have a Home and Eternal life with Him.