One of my favorites is...
"The older I get, the more I see a straight path where I want to go. If you're going to hunt elephants, don't get off the trail for a rabbit." - T. Boone Pickens
Who knows, these self-made billionaires might know a thing or two...
Click on the link below to read the advice...
Best Advice from Billionaire Investors for Entrepreneurs
http://www.entrepreneur.com/article/233763
Best wishes,
Dien