Michael W. Sonnenfeldt is an American entrepreneur, philanthropist, and political activist. He is the author of "Think BIGGER and 39 other Winning Strategies from Successful Entrepreneurs" and the President and Founder of TIGER 21, a peer membership organization for high net worth individuals. He also serves as a Board Member of Earthjustice and the President of the Goldman-Sonnenfeldt Foundation, and is involved in several other philanthropic and political organizations.

Learn more about your ad choices. Visit megaphone.fm/adchoices