There is absolutely no reason to believe that this is the only way to write “world class” software. I have bo reason to doubt that this worked for Mr. Carmack.

There is absolutely no reason to believe that this is the only way to write “world class” software. I have bo reason to doubt that this worked for Mr. Carmack. And sometimes when there are product deadlines or production issues, it absolutely makes sense to work round the clock to fix. Sometimes you might even be in the zone and can’t think of anything else. But claiming that this is the only way is 100% Grade A BullShit. Strive to have a balanced life and be extremely careful not to get burned out. Maintaining that joy for building things requires balance and perspective instead of slaving away your life.