A very good friend of mine has this plaque hanging on the wall of her laundry room: "A clean house is the sign of a dull woman." The same goes for writing. Today, overcome your perfectionistic tendencies and just write. Don't correct typos, don't go back to the line you just wrote, don't clean anything up. Just write. (I do this by closing my eyes while I type.) You have to make a mess before you can find the heart of your writing.