My kids go to bed at 9pm, my 18 year old goes to bed at 11. They wash dishes after meals, take out trash, do laundry, get good grades. And every day when the studying is done and homework as well, they can play games or watch tv or whatever within reason until bedtime. And you know what they call me? Daddy. Because I set rules, enforce them, and show the rewards for when they do. So, turn off your Xbox and go the hell to bed, focus on school, grades, and work. Then you can set time aside for video games and things that have no real impact on life at all.