From narcissism to inaction and micromanagement, here are the fatal mistakes that business leaders make – and how to avoid them.  1. Complacency “I will not allow yesterday’s success to lull me into today’s complacency, for this is the great foundation of failure,” Og Mandino wrote in The Greatest Salesman in the World. In short, Mandino is saying you cannot rest on your laurels. If we really want to get biblical about complacency, we could say that “pride goeth