Thanks. Right now I'm reading whatever book my wife is reading each month for her monthly book club, as an additional activity we can enjoy together. Some day if I have time to read "The First Fifteen Lives of Harry August" I'll let you know how I liked it. Have a health and happy year.

EDIT: I've acquired the ebook of "The First Fifteen Lives of Harry August", so it will be handy when I do have time. Based on the description "when death comes, Harry always returns to where he began, a child with all the knowledge of a life he has already lived a dozen times before" it also reminds me of a book with a similar concept that I really loved a lot, even though it may not be strictly considered sci-fi/fantasy:

"A Dog's Purpose" by W. Bruce Cameron

This is the remarkable story of one endearing dog's search for his purpose over the course of several lives. More than just another charming dog story, this touches on the universal quest for an answer to life's most basic question: Why are we here?
Surprised to find himself reborn as a rambunctious golden haired puppy after a tragically short life as a stray mutt, Bailey's search for his new life's meaning leads him into the loving arms of 8 year old Ethan. During their countless adventures Bailey joyously discovers how to be a good dog.
But this life as a beloved family pet is not the end of Bailey's journey. Reborn as a puppy yet again, Bailey wonders, will he ever find his purpose?
Heartwarming, insightful, and often laugh out loud funny, this book is not only the emotional and hilarious story of a dog's many lives, but also a dog's eye commentary on human relationships and the unbreakable bonds between man and man's best friend. This story teaches us that love never dies, that our true friends are always with us, and that every creature on earth is born with a purpose.

I just finished reading "The First Fifteen Lives of Harry August" by Claire North.
It was a bit like the other book I mentioned here ("A Dog's Purpose") in one regard (rebirth) except that Harry is always reborn on the same date, whereas the dog in the other book is reborn on the same day as passing (so no time travel element) as a puppy of a different breed, all memories intact (that part is similar to Harry).

It may have been quite a while since you read the book, so some of what I am about to say may exceed your memory (unlike Harry's perfect recall, lol). I've always thought that anything dealing with time travel enigma is always a hard nut to crack, because it tends to defy human intuition, being so different from the world we know. I found the author didn't explain some things completely, which is understandable and often a completely fine choice, leaving the reader's imagination to fill in the gaps.

I must admit I was hoping the author would dream up a plausible description or at least observable result of what happens when what is referred to as a "quantum mirror" (that would supposedly give Godlike insight into the very nature of the material universe) would have been successfully built. Instead I feel the main thrust of the plot was that Harry was so successful in acting like he had no memory of his life before the "failed" memory-wipe, and completely convincing Vincent by doing so patiently through two lifetimes, thus "finally" taking Vincent off his guard, and thus revealing his time/place of birth. And I felt it was fine (after the explosive failure of the quantum mirror) to have the book end with Harry writing his Will/letter to inform Vincent that his impending death would be his final one since Harry's memory was indeed still intact and he would ensure that Vincent would not be reborn in the past.

Thanks for the recommendation. Have an enjoyable year.