Tell this to your children early, and junior high is not too early.
In the 18th century Samuel Johnson said, “Whatever you make, spend less.” In the 20th century Howard Pearce said, “You can go in debt for a home or a business, but for anything else if you can’t pay cash you don’t need it.”
The first thing you must learn is to be able to distinguish between NEED and WANT. Above all if you can’t pay 100% of your credit and debt when due, cut the card up.