Dennis McCallum and Gary DeLashmutt
The biggest problem with many of us is that we are soft from too much success. We are like a child riding a bike on training wheels who thinks he has actually learned to ride. His parents warn him, "It's a little harder when you take the wheels off," but until you actually do take them off, the kid continues to enjoy a false sense of mastery. Once the wheels come off, the child may have to endure a few nasty crashes that could lead to tears, and even a refusal to ride anymore. But without removing the wheels, he will never learn to ride.