Leadership ability is the lid that determines a person's level of effectiveness. The lower a person's ability to lead, the lower the lid on his potential. The higher the leadership, the greater the effectiveness. Your leadership ability-for better or for worse-always determines your effectiveness and the potential impact of your organization. To reach the highest level of effectiveness, you have to raise the lid on your leadership ability. The good news is that you can-if you're willing to pay the price to change.