From scratch vs. existing business

If you are at the crossroads of your entrepreneurial decision-making whether to start from scratch or buy an existing business, there is one question that you alone can answer.  Your answer will be based on how you visualise your business idea.  It is very difficult to convey this to the other person.  Most of the time you are the only one who can see the end of the tunnel, the vision.  The question that you must answer is this: What do I have in me that can make this business idea a reality?  You get the answer to this and the rest will be a breeze!