Poor communication is expensive. A study by David Grossman shows it can cost a business up to $62M annually. Leaders beware! I have worked with some of the most brilliant business leaders over the last 20 years. Some tiny mistakes in communication can keep them from reaching their potential. Here are the 3 most common mistakes leaders make (and how to fix them): 1. *Assuming that people understand* The problem with knowing something is that you assume everyone else knows it,