five tips that anyone – male or female – should know as an entrepreneur.

It takes a lot to build an empire. Take it from those who've done it.

Six of the best-known women in business sat down on Wednesday for a leadership roundtable at Martha Stewart’s second annual American Made event in New York City. The event serves as a venue for successful entrepreneurs of all stripes to network and showcase their goods.

In their discussion, cosmetics bigwig Bobbi Brown, fitness entrepreneur Tracy Anderson and several other all-star business leaders including media mogul Martha Stewart herself, shared some of the keys to their success.

Here are five tips that anyone – male or female – should know as an entrepreneur.

1. Be open to change.

Whether entering a new field or facing unexpected challenges on the job, entrepreneurship requires keeping an open mind. Martha Stewart started her career on Wall Street, while Tracy Anderson was inspired by her work as a dancer. When Fern Mallis, creator of New York Fashion Week, realized back in 1991 when she was working as the Executive Director of the Council of Fashion Designers of America that there was potential for a major fashion event in New York, it led her to a big career shakeup. She recalls thinking to herself, "I think my job description just changed.” From these changes, however, the panelists were able to achieve their greatest successes.

2. Realize friends and friends of friends can help your business.

When Mallis was setting up the first New York Fashion Week, she found support in friends and acquaintances that helped the idea take hold. Bobbi Brown, founder of Bobbi Brown Cosmetics, did the same. “All I did was invite some friends, some models, some editors – and I guess that’s called marketing,” says Brown about the launch of her first lipstick. The panel itself was proof that friends and friends of friends can be brought together in unexpected ways: Martha Stewart had catered another panelist’s event decades earlier, while eBay vice president Richelle Parham uses fitness entrepreneur Tracy Anderson’s workout tapes and every panelist had some experience with Bobbi Brown makeup.