Late to the list party but, "The First 15 lives of Harry August", by Claire North. It's a wonderful exploration of reliving your life over and over and over ag

Late to the list party but, "The First 15 lives of Harry August", by Claire North. It's a wonderful exploration of reliving your life over and over and over again, but also finding out that there is a small number of others who do the same and communicate with each other across the centuries of past and future. She forms her character dialogue well too, which is always good.