Robert Frost had been working feverishly all night on his long poem, "New Hampshire," when he walked outside to see the morning sun. And then what came to him was "Stopping By the Woods on A Snowy Evening." It arrived gently and easily with all its hush and chill.
What you are working so hard upon may simply be preparing your mind for the "real work" of the day, getting you in a position to receive that sparkle.
That's why I'm here to remind you to write. To write anything - and know that unexpectedly, bells will jingle, a horse will nicker, a swirl of frosty air will appear on your breath in the air before you.
Work long and hard on a piece of writing. When you take a break, spend it playfully, writing - the play break is the real work in disguise.