Wallet Backup
This isn't so much a tip as a reminder to do something that could save you time, energy, and insanity should you ever lose your wallet. Suze Orman and every other financial tip-giver offers this: photocopy the contents of everything in your wallet, front and back and keep it in a safe place. If you lose your wallet, you'll have every card and phone number to call. It may sound tedious but trust me, if you need that information immediately, you'll be glad you made the effort.