There is a wise old saying 'Eat it up, wear it out, make it do, or do without'. Thrift is a practice of not wasting anything. Some people are able to get by because of the absence of expense. They have their shoes resoled, they patch, they mend, they sew, and they save money. They avoid installment buying, and make purchases only after saving enough to pay cash, thus avoiding interest charges. Frugality means to practice careful economy.