If you have written long stories, then you might have ran into some of the issues I have. I cannot fully outline a book like some do. I have to allow my characters the room to become who they are. Discovery writing is a process that allows the characters to affect much of the flow of a story. I had and idea for Eversoul surrounding the concept of secrets. From there I drew a cast of characters that would play on the stage. Then I wrote and looked to see where they would take me. I find their conflicts against each other and themselves. The story grows as they grow.
After the story the work comes: editing, correcting mistakes in descriptions, making the story clear and concise. Sharpening the images, making everything pop and stand out. Beta readers for feed back are a must!