Entrepreneurial success stories are the stuff of which American dreams are made. Much like Oprah Winfrey and Steve Jobs, the six self-made millionaires profiled here have one thing in common: Thanks to hard work, determination and sound advice from mentors, friends and family, they've been able to build thriving businesses from the ground up.

The rise to the top can be bumpy. In fact, some of the entrepreneurs we talked to were homeless during the early years of their companies. That's why they all agree, including Radio One's Catherine L. Hughes and Life is good co-founder Bert Jacobs, that it's important to help others in need.

All have advice for young entrepreneurs…

(READ the Kiplinger story in Yahoo Finance)