It's not that difficult. Of course it wasn't something I had to contend with back when my kids were young. My daughter however, has 3 children under the age of 10. On school night's she allows only 2 hrs of “screen time”. This includes t.v. And they have to complete homework first. I believe she allows 3 hours on Saturday and on Sunday. If the weather is really nice however, she insists they spend at least a couple of hours playing outside first. Those are the rules and she sticks to them, with some exceptions when necessary.