Seems to me that you don't fully understand the point of this article. The author is suggesting that taking some time for yourself personally will make you more

Seems to me that you don't fully understand the point of this article. The author is suggesting that taking some time for yourself personally will make you more productive, not less. Pushing yourself to the breaking point just so you can say that you worked as hard as you could is a losing strategy. Let's not look to give ourselves a convenient excuse for when things don't work out. Instead, let's try to make it work out :)