As my 2-star rating notes, it was ok. There isn't much there there. I know this book got a ton of notice all over but I just didn't see it.
I have seen other reviews mention sci-fi. This is not sci-fi folks, the supernatural element is just there as a device for the main character to investigate the roads not taken. But for three quarters of the book, it reads more like a catalog of these lives not lived, very superficially. Only then, when she supposedly finds the perfect life, well... I won't spoil.
Maybe this ties to the author's previous book, Reasons to Stay Alive.
I expected more from the premise and the buzz on this.