Discontent

"Discontent is the first necessity of progress. Show me a thoroughly satisfied man and I'll show you a failure." --Thomas Edison

Research shows that workers who are in a bad mood pay more attention to the details and are more productive. That's a guiding principle in my management principles. Happy employees aren't actually doing their work. Thomas Edison realized this principle. A content man isn't doing anything; he's a complete failure. An employee who is discontent is far more likely to be one who is actually doing work. Manage you company to keep the workers unhappy, and you will have a more productive workforce.