I find it helps to say "I'll just work on this for X minutes" and time myself. The Pomodoro Method is a simple way to get started, although personally I track t

I find it helps to say "I'll just work on this for X minutes" and time myself. The Pomodoro Method is a simple way to get started, although personally I track time more granularly using a set of shell scripts, but the habit of recording when I start and stop focused work took a while to build up.