It's a whole lot easier when you've got a phaser…
"Computer," sighed Q, "end program."
With that, everything disappeared—the whole universe he had created for himself. It had been fun being omnipotent. But the real Picard was calling him for bridge duty, and he was only an ensign. Sometimes holodecks could be extremely depressing. No, that wasn't right. It was reality that was depressing. As Ensign Q walked to the turbolift, he seriously contemplated suicide by vaporization.