As I have vacation time over the holidays (and once again find myself randomly tweaking my GTD system) I ponder the critical role of discipline and GTD, and discipline and life in general. I put a post up over here.
This led me to think about how important discipline is when utilizing GTD. You need discipline to capture. You need discipline to conduct your weekly review. You need discipline (if you're weird like me) to not constantly look for a "better GTD mousetrap." Although I have to admit, that last piece is kind of fun (did I mention I'm a little weird)?
What keeps you disciplined with GTD? How do you keep a level of discipline in your life?