Undoubtedly the first thing that must exist to make a business is the idea of what you are going to do, you can not go adventuring in this world because the consequences are suffered by our economy. Not only the idea but also the planning to develop it and adapt it in case the main plan, for some reason, does not work, something that is common since the obstacles challenge creativity. 
RE: Why the Business Idea Is Key For a Business to Become Successful (Part 2)