Stephen Greathouse / Shutterstock.com Entrepreneur, Shark Tank host, and investor Kevin O’Leary-also known as “Mr. Wonderful,” has been giving financial advice for several years. Explore: 30 Celebrities Who Went From Rags to Riches Also: 4 Genius Things All Wealthy People Do With Their Money O’Leary — whose net worth stands at $400 million, according to […]