You can't write a novel all at once, any more than you can swallow a whale in one gulp. You do have to break it up into smaller chunks. But those smaller chunks aren't good old familiar short stories. Novels aren't built out of short stories. They are built out of scenes.
Orson Scott CardMy favourite all-time work of fiction: Lord of the Rings. My favourite all-time nonfiction book: Guns, Germs, and Steel. Ask me again next week, you'll get a different answer.
Orson Scott CardDo you know why Satan is so angry all the time? Because whenever he works a particularly clever bit of mischief God uses it to serve his own Rigteous purposes." "So God uses wicked people as his tools?" "God gives us the freedom to to do great evil, if we choose, then He uses his own freedom to create goodness out of that evil, for that is what He chooses." "So, in the long run, God always wins?" "Yes, in the short run though it can be uncomfortable.
Orson Scott Card