Every artist, every author, every person who is offering a product to the marketplace needs to answer one question before they ever begin to form a public persona: Who is my audience? Once that question is answered, you can begin to hone in on a message that will appeal to that particular targeted consumer base. So many times I have been in meetings with people who say something like "I want my audience to be the whole world." I've been known at that juncture to draw a large circle on a piece of paper, point to it and say, "That is quite a large market. Are you sure you have the budget for this?" Sometimes that directs them back to reality. Sometimes it doesn't.
The reality, according to the Apostle Paul in 1st Corinthians 12, is that we are not all called for the same purpose. We have unique gifts and talents that place us precisely where God wants us in the grand scheme of things. We must surrender ourselves to the fact that we cannot individually become the body of Christ. We can and must, however, be the necessary left eye or the right leg or the big toe that makes up the body. Then, we can make a difference to the audience that we have been assigned to reach.
By understanding who we are speaking to -- with our books, music, films, etc. -- we become that necessary link that makes the entire body work correctly. And time has shown that when that happens, Christ is indeed glorified to the whole world. So draw a big circle on that piece of paper and then locate your teeny, tiny dot. That's where you begin.