To be sure, it is thrilling to watch what can happen when men cooperate carefully with nature. But it is not one-tenth as fascinating as watching yourself respond to your own carefully administered thought management program. It’s fun to feel yourself growing more confident, more effective, more successful day by day, month by month. Nothing—absolutely nothing—in this life gives you more satisfaction than knowing you’re on the road to success and achievement. And nothing stands as a bigger challenge than making the most of yourself.