Ryan Holiday explains why I write best when I run:
As a runner, the real race is getting up and running every single day. Life is the marathon. The same is true in writing. A lot of people sit down to write a book. Many don’t make it past that point. Plenty get something finished, but are intimidated by the maze that is publishing, promoting, selling. And of the relative few that make it through there, only some have the stamina to start the next one. To make it a career.