The March 3 issue of Business Week features a blurb regarding controlling your credit card usage. In the past, the solution to credit card overusage has been to cut up the card--which leaves you stuck in the event of an emergency. A tip from the book Good Advice for a Bad Economy suggests that you put your credit cards in a sandwich bag full of water, then stick the bag in the freezer. This way, you have access to the cards in the even of an emergency, but "impulses must wait for the ice to thaw."