1. Never store your credit cards on Web sites
Do not make the mistake of opting-in to save your credit card information on a retailer's Web site. They offer this "For your convenience!" and "Faster check-outs!" Well, duh.
Instead, choose to enter your credit card and billing information each time you make a purchase. The extra time required to take your credit card out of your wallet and manually enter the information will add some mindfulness to the purchase process.
Take a few minutes now to remove your credit card info from your most frequented sites.