> so much more out of the same 24 hours

Do they? Are they doing more work, or is the set of things they've chosen to be good at more stereotypically impressive than the set of things you've chosen to be good at?

> all the worldly churn

Surely all of that adds up to <1hr/day (assuming exercise does double-duty with other intellectual activities and general unwinding)? You could work a pretty intense schedule and still have plenty of time for personal development with that level of overhead, so long as you actually stuck with it and got everything done.

> food prep and washing

I'd be curious to hear more about what this looks like for you. I might have ideas.