I think that is self confidence, professional skills, relationships with others people (sociability and skill to negotiate), money, topicality business in time and other . Will be success of a business is the difficult. Because you must will be better than other people. You must constantly working on yourself because you must will be a better man or women at the market place. Than you will be a customers why will follow you. Every day we sale myself and we must work on it. We must will be a better than yesterday because winning is the best .