on Jane Friedman site:

Participants in November’s National Novel Writing Month challenge are cautioned not to rush their work out the door. Indeed, it’s wise not to send the draft completed on November 30 off to agents or editors on December 1, like an overeager chef serving a partially baked cake. Typing “THE END” is just the first of many steps in getting a manuscript ready for the prime-time glare of the submission spotlight.

Plenty of writers fall to the other end of the spectrum, though. They finish a draft, then a round of self editing, a round of critique group input, another round of self-editing, a round of professional editing, a round of rewrites, a round of beta reading … and round and round and round for years. These are the chefs who tinker endlessly with the recipe, leaving the dinner guests to expire from hunger or search for another meal.

The writers who get their books into the world are those who find a middle ground. The scenarios, diagnoses, and solutions here can help if you tend toward the tinkering end of the spectrum.