Does anyone use Getting Things Done, 43 Folders or Zen to Done at home or work?

[Gincognito]

I'm looking for a way to be more generally organised at home and work and came across this at www.zenhabits.net.

Does anyone else use these systems? Are they as good as they sound?

I have used GTD off and on. I think it works but one needs to be disciplined to use it and I'm a bit lazy.

The free podcast where David Allen explains GTD is excellent -- reading the book takes more work.