I have to say that I don't lead a very project-rich life. I have few obligations, and they are easily trackable with a certain degree of effort, in which GTD is THE system for me. I find that if I stick to the basic GTD principles and at least do the weekly review on a consistent basis and move on my projects, however few and simple they are, I can achieve measurable success: Things Get Done, projects get moved on, things get accomplished in a logical and timely manner -- that is all I really demand from ANY system, and GTD (for me) is THE system that works here and now. It has taken some time for many points and attributes of the system to sink in and become second nature. At this point I don't see how I can have it any other way. David, in his 2 books, basically outlined some of the MAJOR principles that are applicable in ANY organization and self-actualization system, however complex and demanding the outcome. I was one of the early adopters of the system (after the book came out in early 2001 at least) and I am glad I joined the "movement" early on. I would advise anyone looking for a way to better themselves and get control of the demands of their life by getting a grasp of GTD on, first, a primitive level, and then, slowly perhaps, embarking on a richer and higher level GTD journey. Good luck to all you, fellow travelers.