I downloaded the ebook to my phone. I’d seen a few poor reviews mainly saying it was a re-hash. It is in some ways but the simplification of the steps into two groups: Control steps & Perspective steps is elegant! Worth the price of the book IMO.
The Matrix diagram is useful, but the next one covering the 11 steps is the essence of simplicity.
As I read the book I am slightly tweaking my system as I go. It is beginning to work well for me. After several years of GTDing I have almost got a system I trust! Shifting from Palm amd the PC to iPhone has made a big difference.
David Allen suggests that there is a qualitative leap when the mind is truly freed of having to do the tasks the *systems* should do. I’m getting close.
Buy on Amazon