It is becoming more and more popular to deride people who work a lot. When you tell people the hours that you work it’s not uncommon to hear back “You know, people are actually more productive with 30 hour work weeks than sixty hours.”
There is something to the idea; when you work long hours you often lose out on per hour productivity. Becuase you are working with less energy, things take longer. But the desire to work short efficient hours throws a lot of people off.
Most of the time, before you can get down to working short and productive days, you need to get comfortable working long hard hours. To reach a point of efficient productivity, you need to get comfortable brute forcing your work with long hours.