No matter what you do professionally and no matter how you present what you are trying to sell and what you represent, at the end of the day, it will always be about getting your clients to buy what you are selling.
How do we make customers for a lifetime who either purchase from us or become strong advocates for us? When a company adopts a policy to truly embrace its customers and care about them enough to develop an excellent customer experience for each customer, that is when the customers can feel so strongly about a company that they will not only tell their friends about the company but will even go as far as to defend them when other customers give a bad review.
A large (and early part) of your professional process that eventually leads to greater success and higher revenue is lead generation. Once you have taken those leads and converted them into clients (eventually), you need to maintain the relationships that you have formed with those clients.