You are correct, but I think you have to make a distinction between being successful, and being the best in your craft. Those two not always align, and the arti

You are correct, but I think you have to make a distinction between being successful, and being the best in your craft. Those two not always align, and the article talks about the second one. If you look at top athletes, where being the best in your craft is priority, talent, quality of training and rest are the most important factors. I agree that the same is true for mental work. Look at the daily schedules of famous writers and scientists. 6 hours is a full day of work, with a lot of resting and walking. But if you move into the realm of successful people, all those things that you mention come into play. They can also handle more work hours because management is not as intensive as serious mental work on 1 topic.