Another question for freelancers: What's your ratio of deep work to shallow work? With coding, intensity impacts how long you can work. In the book Deep Work,

Another question for freelancers: What's your ratio of deep work to shallow work? With coding, intensity impacts how long you can work. In the book Deep Work, Cal Newport says that ~4 hours per day of high-intensity focus is about the limit. So, how many hours do you bill per day on average - and of those hours, what's the breakdown of high-intensity vs. other work?