The writer must have a good imagination to begin with, but the imagination has to be muscular, which means it must be exercised in a disciplined way, day in and day out, by writing, failing, succeeding and revising.
Stephen KingHe pointed toward the silhouettes on the side of the [bathrooms] instead--black cutout man, black cutout woman. The man had his legs apart, the woman had hers together. Pretty much the story of the human race in sign language.
Stephen King