A leader's ability to achieve anything great for God begins in his or her heart and mind. -John C. Maxwell Effective leadership starts with healthy, clear thinking. Successful leaders know how to focus on the essentials. Best-selling author and leadership specialist John C. Maxwell shares meditations sure to challenge us as leaders to reach our full potential as servants of God. In this 30th anniversary edition of his very first book, we learn that "our ability to achieve anything great for God begins in our hearts and minds." Ready for a change of heart? Ready to be transformed by the renewing of your mind? Increase your effectiveness as both leader and servant as you "think on these things.