In many ways, it's like what Mill said: What's the utility in pondering utility? In ninety-nine out of one hundred cases, pondering the utility of utility brings about disutility. We've got the whole of human history to use as a general example of how to act. (Sometimes it's easier and brings about more utility to just go with the flow.)
Don't get me wrong, it's not like I don't have any plans whatsoever; I do. Whether or not the choices I make or the plans I've laid out will get me to where I want to go is a different story. And that's the source my uncertainty.