I bought it on the basis of glowing reviews, I found it disappointing and dull. I thought it may be like a favourite book of mine Kate Atkinson's "Life After Life" slightly similar premise, the possibility of different outcomes if alternative paths in life are chosen. Yes I think I would agree OP, I thought it was okay at the beginning and then it seemed to lose momentum somewhere, by that time I'd thoroughly lost interest anyway and couldn't wait to finish it. Thankfully it's quite a short book.