Zen To Done
Leo Babauta of Zen Habits has written a wonderful post on ZTD. Zen To Done is his attempt to simplify David Allen’s GTD system - it addresses many of the pitfalls that new GTDers (including myself) often fall into.
Zen To Done (ZTD): The Ultimate Simple Productivity System
Give it a look, it’s well worth the read if you’re having trouble with GTD.