Job functions are very important. Without them, departments would blur and work flow wouldn’t run its course as smoothly. I’ve blogged about this before, however I strongly believe there’s value in looking at your career holisticly. By holistic, I don’t mean exercising reflexology or Chinese medicine. I’m referring to the need to think about your professional contribution in a well-rounded way. By examining the individual parts that make up the whole, and then leveraging the interdependence of those elements.
Educating oneself might not immediately result in the task one is assigned (like revenue for example). But greater knowledge leads to greater understanding, greater breadth of service and the ability to think laterally about problem solving.
Improving yourself, regardless of the direction or method you choose, will reflect positively on your career.