I lived (and sorta still do live) by this advice. It's good, if you have the lifestyle and means to support it, except for the sleep advice:
But if you're tired, don't fight it. Sleep.
This worked out to be an absolute disaster for me (if you take it to its logical conclusion, if you're not tired, don't go to sleep, etc). I ended up free wheeling around the clock, sometimes getting up at 7pm, sometimes 2am, sometimes 11am.. it was nuts. And that sort of sleep pattern really messes with your head after a while.
This works fine for me, but my body has this habit of waking up when the sun is up -- even if I've only gone to sleep a few hours ago. That also isn't a problem in itself, as I will fall asleep around 16:00 on those days and catch up whatever I missed the previous night, and still be tired enough in the evening to go to bed at a normal hour.
It's a sort of built-in automatic circadian rhythm reset mechanism which kicks in after just one late night coding session.
But if you're tired, don't fight it. Sleep.
This worked out to be an absolute disaster for me (if you take it to its logical conclusion, if you're not tired, don't go to sleep, etc). I ended up free wheeling around the clock, sometimes getting up at 7pm, sometimes 2am, sometimes 11am.. it was nuts. And that sort of sleep pattern really messes with your head after a while.