Don’s expertise in the field leadership development led to decades of research into the impact of a positive mindset. He is a sought-after speaker on the topic, often speaking at corporate, national and global conferences, and has been published nationally. He is currently the Founder of GoPositiv, but has spent a quarter century leading talent development for such companies as Astellas Pharma, Allscripts, and United Airlines. He has recently consulted for such organizations as AstraZeneca, Wintrust Bank, Remarkable Health, Ada S. McKinley Community Services and Audentes Therapuetics, and has thrilled thousands with his energetic keynotes on shifting to a positive mindset.