Ken Blanchard, Ph.D., is the Chief Spiritual Officer of the Ken Blanchard Companies, and a highly sought-after author, speaker, and business consultant. His perennial international bestsellers include The One Minute Manager, Raving Fans, Gung Ho!, and Whale Done!. He lives in California. One of the first employees of Twitter, Claire Diaz-Ortiz is an author, speaker, and businesswoman. She lives in Argentina.