Throw away your address book. Seriously.
But, just before you do that, copy each address onto its own individual 3×5 card and file it alphabetically in an index card box. If someone moves or changes their phone number, there’s no need for an eraser or Liquid Paper–just toss that card and replace it with a new card containing the new information.
Kick it up a notch and use the back of each card to note whether or not you sent each friend a Christmas card, and whether they sent you one, year by year. (I started doing this when I realized that I was sending out over 100 cards and only receiving about 80!)
Works for me! Here’s what works for Shannon.