Bill Guertin is the author of Reality Sells, and Chief Enthusiasm Officer (CEO) of The 800-Pound Gorilla. Bill Guertin is an endorsed sales trainer for NBA and train sales teams from NHL, Major League Baseball, and Major League Soccer.

With more than twenty years of real-world, on-the-street experiences in broadcast sales, service sales, and marketing have given Bill Guertin a broad understanding of how and why people do the things they do. Bill Guertin has developed specific techniques proven effective in salesmanship, customer service, marketing, and time management. In addition, his gift of communication allows audiences of all kinds to readily absorb and apply his messages to their own lives. Bill Guertin speaks to thousands of people each year, and a regular featured columnist in magazines and newspapers in the suburban Chicago market. Bill Guertin is also the co-host of a weekly NPR radio talk show featuring authors and forward thinkers in business and personal development.