What's the focus?

I've been a subscriber to the above philosophy for quite a while but my said belief has recently been challenged. In the course of reading Personality isn't Permanent by Dr. Benjamin Hardy, he professes that it is impossible to proceed without being mindful of the result. He states that to in order to take steps toward a goal one must always envision the goal clearly every step of the way; always having the target in focus.

I believe this to be true. One must have a clear vision of a particular objective in mind then map out the steps necessary to reach it. However in my experience, although it is important to frequently visualize the goal, I find it critical to focus undistracted on the work at hand. If that project is related to achieving the end result then it puts me one step closer to realizing the desired outcome.