IF you like time travel, one SF classic [1973] is by
David Gerrold:
The Man Who Folded Himself
Of course, there are many other works involving time travel that have come out over the years.
Here's a link to Amazon, so you can decide if it's a good fit for you:
https://www.amazon.com/Man-Who-Folde...s%2C299&sr=8-1