Read what you love. Read what you would like to write. Read well beyond what you love to read. Read classics. Understand and appreciate the 300 years of literature that has come before you. Read and continue to read for as long as you write. Refuse to allow yourself to become stuck reading one or two genres or types of books. Find joy in all kinds of writing. Read books that are too deep, too difficult for you. Take a course in English lit. Take your ideas seriously.