John Izzo is president of Izzo Associates. He has spoken to over one million people, advised over 500 companies, authored or coauthored six books and helped some of the world's most admired compani...ver maisJohn Izzo is president of Izzo Associates. He has spoken to over one million people, advised over 500 companies, authored or coauthored six books and helped some of the world's most admired companies, including IBM, Qantas, the Mayo Clinic, Verizon, RBC, TELUS, Westjet, DuPont, Humana, Microsoft and McDonalds.ver menos