One thing that stuck out to me when I was still in my early 20s thinking I needed to work all the time was the mention that Dave would always take holidays on time, every time without any debate.
While I may not love Microsoft, it was probably my first real exposure of a highly competent and qualified person who wasn't grinding 24/7.
It still feels nuts to write it but it's a holdover from rural (and retail) life where the mindset is basically "The more you suffer, the more virtuous you are".
As much as I still struggle to properly take time off (that is, it's easy to postpone because of X or Y being more important), thinking about Dave's view is always a good reminder that it's not a choice between taking a break and being good at X.
[1]: https://www.amazon.com/Show-Stopper-Breakneck-Generation-Mic...