A friend used to remind me that the number one goal in dealing with difficult people or circumstances is this: Don't become what you hate. He wasn't talking about hating the person, but he meant that we don't want to become evil, wicked, petty, and sinful in our actions and motivations. We don't overcome the Devil by underhanded and dishonorable means. We overcome evil, we drive it back into the abyss, by doing what is right and filling our hearts and lives with goodness. There is no greater example of overcoming evil with good than Jesus.