When youcan't write, work

Tom E. Kennedy, my mentor, quoted that title many times while we met at my residency at FDU. Of course, I've already forgotten who'd originally said it (Whitman?) Please feel free to leave the answer in a comment and I'll fix this...
But, wow, I always hated revising and I'm so happy to have someone as talented as Tom line edit my work, this time it's incredibly grueling. Good, and I'm sure my prose is benefiting to a GREAT degree. I just hope I get to the end of the revisions and get a little kick of inspiration!
So far, I've added about 3 pages... I hope they're good pages, but we'll see what happens when I move on and resubmit in a few weeks. Wish me luck and lots of interesting verbs!