E. L. Doctorow compared writing a book - and I think that stand for any major project -
to driving a car at night; you can only see to the end of your headlights … but you can make the whole trip that way. I don't quite agree. You will only make the trip if you know where you want to go. You need some navigation tool. I mention that because I know young writers who forget or don't believe they need to structure their work before they start writing. They will follow the headlights of their talent alright, but more often than not they end up in nowhere land.