The best business partners have complementary skills. : Just because you have a bold new business idea doesn't mean you're destined for success. In fact, since 1994, about half of businesses have gone under by year five, and one in five don't even make it to their second year of existence. If you want your venture to go the distance, you need to put in the effort. It helps to find a business partner who is willing to do the same. The partners on this list joined forces to make their business dreams realities.