Joseph Grenny is a four-time New York Times bestselling author, keynote speaker, and social scientist for business performance. His passion and expertise is human behaviour and its impact on business performance and relationships. His work has been translated into 28 languages and has generated results for 300 of the Fortune 500. Joseph has been a contributing columnist for BusinessWeek, Forbes, and Harvard Business Review. He has appeared on The Today Show, CNN, Bloomberg, and Fox Business News, and been cited in hundreds of national news publications including The Wall Street Journal, The New York Times, and USA Today. Joseph is the co-founder of VitalSmarts, an organisation committed to teaching others how to effectively change human behaviour.