They sure look good in glossy magazine ads, but luxury products hold no key to your contentedness today. Cars, jewelry and designer clothes are nothing more than empty material goods. If you're planning a shopping trip, try not to get hypnotized by the bling you encounter. It's time to be more particular about what you use your plastic on. Frivolous things won't bring the joy they once did, and they always cost more than they are worth, at least in terms of the value they bring your life.