You’re a writer because your head is full of stories that you need to tell. If you have the self discipline to keep writing, you eventually end up with a first draft.
You put it away to get some perspective and come back and edit it to death. If you’re not going to chase agents and publishers, you decide to self publish. That means you’re responsible for everything.
I quite enjoy editing. Writing is art and craft: the first draft is the art, the inspiration and creativity, after that it’s craft. The craft involves editing, critique partners, an editor, beta readers and all sorts. Whatever help you use, eventually the novel is finished. What happens after the writing?