Turn it into a force for good.
Let it fuel your own ambitions. Want that fancy car? Then work harder, go to school, ask for a raise, etc.
And also use it as a force for introspection.
Do you really want or need that fancy car? Really?
Look at its true cost. Fancy cars come with fancy payment plans and fancy repair costs. Sports cars in particular may be stopped for speeding more often. Can you afford tickets and more expensive insurance, or to spend time and money defending yourself in court?
If you can't, then your friends probably can't, either. That thing you're oh so envious of just might be an albatross around their necks.