If you could go back and re-live a particular moment , what would it be (if any??)

Send me back to the start, I'd do everything different!

I don't believe in reincarnation but I had a strange thought the other day. What would I be like if I had existed previously and where? Would I have been a tribal member in Afghanistan? That would suck. Or a German in pre-WW2 East Berlin? Or a thug in Brooklyn in the 1920s? What about a future existence on this earth? Would I end up in the jungles of Guatemala? The desert of Africa?

No, despite the errors I've made in this life there are a few things I'd like to correct, but if I did that would I still be where I am today? Meaning location, vocation, spouse, etc.

I dunno.