The document discusses 5 major difference-makers for getting referral-based business: 1) Move from being a generalist to a specialist by defining your strengths and credentials, 2) Position yourself as a problem solver rather than just a product provider by understanding your clients' problems, 3) Have self-confidence and self-control when listening to clients and outlining solutions, 4) Be reliable and predictable by being easy to reach and setting clear expectations, and 5) Be sharp and not intimidated or manipulated by clients or other professionals. The document recommends picking one of these areas to focus on.