[dilap]

I'm about to turn 40, and I feel like perceptually life gets faster and faster, which seems to be a common experience.

So in that sense you may not do all the living you've done all over again and then some.

For example, I'd say my 30s felt half as a long as my 20s, which themselves seemed to pass much faster than than 10-20, which felt very long indeed. And childhood, 0-10, seemed like an eternity!

This is true even at a micro level. E.g. a 3 hour car ride now does not feel like a big deal to me, but it seemed almost unbearably long to me as a child.

Another way in which you won't do as much living as you've already done is that in your early years you went through profound development -- both physically and mentally. That doesn't happen again; we mature, we refine, and (sadly, hopefully not too much), we decline, but it's nothing near as profound as we get to experience early in life.