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…
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 …
Emanuel James "Jim" Rohn was an American entrepreneur, author and motivational speaker. His rags to riches story played a large part in his work, which influenced others in the personal development in…