Explain to them that wants are the things we fancy, like the latest iPhone or Louis Vuitton bag. Tell them that needs are the necessities of life, such as food, shelter, essential clothing, education, and healthcare.
Doing so will allow him to review procurements, evaluate past buying impulses and analyze when they should have spent money wisely. It will help improve their spending habits in the long run.
When you are out in the mall or grocery shopping, show them how to distinguish and compare different prices and explain why buying one item makes better sense than another.
The earlier they start saving, the more money they will have in the future. This move might be the secret to making your teen into a financially confident individual.