“They say everybody has a novel inside them, and that’s usually the best place to keep it. Really.”
I think that’s snarky and facile and not helpful at all.
Keep that novel inside you, and you’ll never get to writing the second, third, or fourth book that hopefully will be better.
I, an unpublished nobody, say: write that first book. Just don’t expect too much of it, and don’t stop there.