It's the same technique you'll use when they're teenagers and want to go to a concert on a school night with people you've never heard of. They're more apt to believe a compliment if it's overheard. Make time to goof off with them and take a walk and let them give a party sometimes, or invite their friends to go ice-skating. The laundry can wait. And keep disciplining them, but please, no sarcasm, no threats, no bribes and of course, no spanking.
Respect is the key to good discipline.
While computer games probably improve a child's hand-eye coordination, they're bound to rev a child, and to rev some children more than others. Mostly though, children who spend too much time with electronic media are losing time with other activities so it must be balanced. I am just 40 years old, and started a family a bit late, but with gusto. I've quizzed lots of friends with 2 and 3, and try to get a sense of how much MORE life changes with one more addition to the family. Life is just now getting saner.