Discipline and making it a non-negotiable priority in my daily life. For me, a day I don't run is a wasted day, so I like to get it done before other stuff can interrupt. I structure my life to make that possible.

I go run about 10 miles around 4:30 to be done by the time kids need to wake for school. To make that happen, I go to bed before 9:00 every night. It doesn't leave very much time for other activities but I can't say my life was improved by wasting time on personal projects or watching TV.