Start in the upper left corner and then walk your way through the questions and answers to help put a "pause" between you and the purchase. Think it through and you'll find yourself with less crap, less impulsive purchases and more money left to pay off debt.
It's in black and white (to save money on color ink) and here is a version with 2- 5x7 cards on one 8x10 page so you can keep one at home by the computer for impulsive online purchases and one with you for possible purchases that come up while you're on the go. Cut it out and you're good to go.
8x10 Full Size PDF version