Comment by blueyes

This is true.

Focus = Energy - Distraction

and

Success = Focus x Time

The way you gain stamina is by doing things to increase your energy and decrease distraction. I wrote and talked about this here, fwiw.

https://vonnik.substack.com/p/state-changes-work-and-presenc...

https://www.linkedin.com/posts/stokedlive_focus-is-power-lea...