I came across this great quote by John Dufresne in the January issue of Writer's Digest
Now it dawns on you that writing a novel is itself very much a plot. Novels are about characters who want something. And you want something, too - to understand the lives of your own characters, which means resolving the trouble in your protagonist's life, which means completing the novel - and you want it intensely. If you don't finish, your life will be significantly diminished. And so you pursue your goal and battle every obstacle . . .You sit day after day. You struggle and at last you finish your novel. Plot's resolved.