John Calvin Maxwell is an American author, speaker, and pastor who has written many books, primarily focusing on leadership. Titles include The 21 Irrefutable Laws of Leadership and The 21 Indispensab…
Oliver Napoleon Hill was an American self-help author and conman. He is best known for his book Think and Grow Rich (1937), which is among the best-selling self-help books of all time. Hill's works in…
Zig Ziglar was a motivational teacher and trainer who traveled the world over, delivering his messages of humor, hope, and encouragement. As a talented author and speaker, he had international appeal …
I am a NY Times Best Selling Author, internationally-recognized Sales Training Expert, Business Coach, and the Founder and CEO of 3 businesses: Cardone Training Technologies, Cardone Group, and Twin C…