We think about people outputs but we often miss the input they gave for it !

Routine of Stephan King:

1. Start with coffee at 7:30 AM.
2. Go for a long walk with no technology on me whatsoever.
3. Eat 14 peanuts and have another cup of coffee.
4. Sit down and write at 8:30 AM, no matter what. Keep writing until 11:30 AM.
5. Have lunch at 11:30 AM and don’t worry about writing for the rest of the day, unless I’m in a groove.
6. The key to my success is to write every day, no matter what, between 8:30am and 11:30am. No exceptions.
7. I’ve done that for 38 years and I’ve written 39 books.

that you have to set time aside every day to your activity.

it’s all about making the required lifestyle sacrifices to write every day. [...] You have to start with the inputs. You have to start with the routine. You have to start with the behaviors.

This reasoning seems correct.