Eternal recurrence is the idea that the universe and all existence has been recurring and will continue to recur. I can’t claim to understand or even speculate on metaphysical properties of our universe – I mean, how would I know? I leave that to scientists with the brainpower and the equipment to measure and prove this theory.
What I can observe is that all of us do have recurring patterns in our lives. It can be almost pathological. Why is it that some people seem to lived mired in a string of tragedies while other seem to be stably gliding themselves through life? Why do some women end up in a series of abusive relationships while others have a queue of non-committal, wealthy men available to fly them all over the world?
I sometimes do think the universe does send you the same test over and over again in different contexts and forms until you’ve cleared that lesson.