How to Get From Micro Manager to Captain & Commander (..or at least crazy maker?)
After having practiced GTD since late 2007 and experimenting with the form almost weekly since, I can fully admit to myself and you, that I fall in the micro manager category. Like you, I've gotten in the zone from time to time and been in captain and commander mode and the true learning experience with GTD is in seeing and learning my own habits in regards towards how to better and more easily fall into that sweet spot on a consistent (and daily) basis.
I mention "at least get me to crazy maker" mode in the title of this thread so to at least reach the other end of the productivity spectrum and see what each side has to offer, in hopes of inching closer towards "in the zone," C&C mode.
If you've practiced, and honestly fiddled with GTD, in how you interact with it, then i'm sure you've landed on all quadrants of the GTD spectrum. I for one fall into that Micro Manager category on most days, and other days not even wanting to open my OmniFocus list; while other days I'll blast through all my actions with not only the intent of completing said actions, but also (at times) going back and making sure I completed them right and to the degree I consider my successful outcome.