60. Avoid Coupon Misuse
Just because you happen to have a coupon for it, doesn't mean you have to buy the item on special offer.
Beware of "two-for-the-price-of-one" offers, which tend to work out in favor of the store not the customer.
Make coupon clipping a once a week or once a month task but only clip stuff you will really use, not because it's an irresistible offer.