I heard about this story from my amazing Spiritual Director a few months ago and then looked for the story again tonight as it was ringing true for me (this quote from here):
"Stephen Covey tells a story of a man who’s working laboriously to saw down a tree. The work is difficult, and although he stays at his task diligently sawing away, very little progress is made. The saw blade is dull, too dull to make much of a dent in the tree trunk. When asked why he doesn’t sharpen the saw and therefore make the work easier and faster, the man says he can’t afford to stop. The tree must be cut down, and there’s no time to stop and sharpen the saw!"
As I sat in that same Spiritual Director's office last week, sinking farther and farther into her couch, I told her how exhausted I was and how I didn't want to go to work lately and just felt blah. She looked across at me, almost lost to the folds of her couch and told me that these were early signs of burn out. She recommended vacation. ASAP. I of course said there was too much to do. I'm too far behind.