I kind of did that by accident, in that I came across GTD while looking for software to manage my outstanding actions better. I've evangelized MyLife Organized elsewhere on this forum today, but the point of this post is that I started by getting my Projects and other demands on my time listed down and in perspective.

That was enough to give me a sufficient sense of release that I could add a new "Organise my Life" project with a clean conscience: buying the David Allen book and gradually implementing more and more of the advice. I'm still not doing GTD properly in some ways - I'm going to try disappearing to a meeting room on my own for two hours to do a weekly review next week, since Friday's scheduled 2hrs (2 to 4pm) turned into 30 minutes at 4:45pm.

The approach in the book is very much an "all or nothing" approach. While I agree that the whole system will maximise the benefits, doing the right bits incrementaly will be more practical for most poeple -especially if, like me, you don't have the luxury of being able to block out time to implement the system.