Another thing -- I've been told by more than a few of my staff that since I've started making them learn new stuff and stretch themselves, they're A LOT happier and they "love me for it."

E.g.: someone comes to me with an idea or problem -- say, redoing the brochures that explain the library and offering them in both English and Spanish. I ask a few questions, and then say, "Okay, go ahead. Check with me if you have questions or problems, and let me see the final draft." This surprised them at first, because I meant it. Now I even have a clerk as our representative to a local committee which will definitely give the town a reputation boost and might well grab the Library a check for USD 5,000. She's ecstatic and stretching herself, learning more, putting her study (working on a bachelors's in international relations) into practice, meeting those in the community who might help her after she graduates, and I don't have to do it! Everyone wins (and my last comment is facetious).