The problem for most self-help books like Tim's is that the author usually underestimates what one might call "micro-judgments," the tiny, largely subconscious decisions that we don't even realize we are making.

I don't think so. Ferriss is all about maximal results in minimal time. In general, his plans require you to do something for some limited time a day, not control your actions 24hours a day. You don't have to make so many microdecisions, just one macrodecision, and then a limited number of microdecisions to follow that macrodecision.