I think there are people who do it (ex: John Carmack). But I used to play competitive chess when I was younger and would regularly put in 6-7 hours after school. I didn't have to pay any attention in school, but I definitely think I can achieve around 8 hours of deep work a day consistently.
Programming mostly.
I think there are people who do it (ex: John Carmack). But I used to play competitive chess when I was younger and would regularly put in 6-7 hours after school. I didn't have to pay any attention in school, but I definitely think I can achieve around 8 hours of deep work a day consistently.
12, I'm not so sure about -- but I intend to try.