Do you know what the best business idea is? The best business idea is to start a business doing something that you like. Many people keep looking for the most profitable business niche, but the problem is that if they do not have an interest in something, then it is going to be difficult to be successful. It is important to be passionate about your business, and that is perhaps the most important thing. If a person is passionate about something, then he will be motivated to work for many, many hours. On the other hand, if a person has no interest in his line of work, then he is going to try to avoid working long hours.