Authors with Motivational speaker Profession Al Duncan motivational-speaker Bob Farrell motivational-speaker Grant Cardone motivational-speaker Gabrielle Bernstein motivational-speaker Louis Zamperini motivational-speaker Lizzie Velasquez motivational-speaker Lilly Singh motivational-speaker Marshall Sylver motivational-speaker Judson Laipply motivational-speaker Jordan Belfort motivational-speaker James Arthur Ray motivational-speaker Jairek Robbins motivational-speaker William J. H. Boetcker motivational-speaker Susan Powter motivational-speaker Steve Rizzo motivational-speaker Warren Ballentine motivational-speaker Sam Cawthorn motivational-speaker Tony Gaskins motivational-speaker