I also am a firm believer in the power of falling asleep while thinking about a problem, and waking up with a fresh approach on how to solve the problem. Thomas Edison was famous for taking naps with a steel bearing on a plate. Salvador Dali had a similar technique he called "slumber with a key"
To further assure that he would not lapse into sleep, he would hold a steel ball bearing in each hand. On the floor, placed directly below his closed hand would be a metal saucer. If he should fall completely asleep, his hands would relax and each ball bearing would fall to the floor, striking the metal saucer, making a noise loud enough to wake Edison.
1. https://fireballimagery.com/2011/09/01/the-naps-of-thomas-ed...
Full paper PDF: https://psychology.stanford.edu/sites/all/files/Implicit%20T...
What is the direction of causation?
We champion Newton for his work in gravity, optics, and mechanics.
Not so much in alchemy.
If the field you're plowing isn't fertile, no amount of good agronomy will help you.
Yahoo may not have been abolutely intractable, but it was in a bad position and getting worse. I had no interest in working for the company or using its products, and I'm no particular fan of Meyers (I think she's accomplished a few useful things, may be felt by her absence at Google, and has also done and said some tremendously stupid things as well). But hanging Yahoo on her neck alone is false narrative.
If you don't have that "talent" for long work hours it's probably counterproductive to force yourself into something you just can't do.
Short bursts are ok, but everyone needs time to recharge.