I'm in the same boat -- I work as a course developer, so my actions involve the analysis and expressing of ideas. My experience, though, is that planning takes more energy than the actions. Both require figuring out a course of action on the fly from a large number of possibilities. Perhaps there is less guidance in planning, and additionally you are making commitments that a certain action is THE best use of your time. Whereas implementing involves picking up the thread or the seed you identified in planning, and following it where it leads. So maybe what takes the energy is deciding with a minimum of guidance, and making the gut-level decision to go in a certain direction.
Originally Posted by ellobogrande