Parenting

Make a list of rules , worked out together, a contract if you will, of expectations on both sides. Like getting job, helping around the house, saving x amount of dollars to help with college.

Failure to do so? Well, you can be as lenient (which I don't recommend) or as strict as you want. Up to and including, having him rent his own place. include things like: we will supply x amt of dollars towards school, you have to come with the rest or do without. Or maybe a matching arrangement, for every dollar - or 10 or 100, whatever - then you'll contribute $xx... If he doesn't cooperate, well, pull the plug. And I'm not just talking Xbox.

Sometimes you have to push them out of the nest. Harsh? Yeah, but so is life. Better to be prepared than not, ya know? Mom/dad will not always be there to bail him out. The sooner he learns that, the better.

Edit to add: your house. Your rules.