You'll probably be up late tonight, pounding away at the computer, poring over bills and columns of numbers at the dining room table, or puttering around the house, straightening up and tending to your most prized possessions. No matter what it is, you can count on getting so involved in what you're doing that you forget about any plans you'd made. If you need to cancel, better do it early. It's okay. People know how you get.