Librarian Note: There is more than one author by this name in the Goodreads database. David Marcum and Steven Smith travel the world teaching people to utilize the corporate asset of ego and limit its liabilities. With decades of experience and degrees in management and psychology, they¹ve worked with organizations including Microsoft, Accenture, the U.S. Air Force, General Electric, Disney, and State Farm. Their work has been published in eighteen languages in more than forty countries.