One hard part is putting aside the stuff you wanted to get in there, but then you remembered you only have one lifetime.

Worse yet, you keep finding more and more great details, which you wouldn't even have noticed when you started, but now have the experience to appreciate. Then spend more time wondering whether anyone else would care about them.

Either "Great artists SHIP!" eventually overrides, or else ... the quicksand wins.

(Read earlier today that Tolsoy originally published 'War and Peace' serially, then heavily rewrote -that whole thing-. Ay yay.)