There’s a reason you haven’t completed your novel: acknowledge it
There’s always a reason that we procrastinate, or give up, on a novel. We give ourselves excuses, but the real reason is beyond those excuses. Acknowledge the reason, if you know it. Ask your creative self to handle it, and give you ideas for a solution.
Should your inner critic pop up, thank him for his opinions: “I don’t like the heroine, she’s fake!”, “You’ve got too many characters!”, “Call that a plot?!”
Then ignore him.
Take a few deep breaths, and know that you’ve got this. Remember to feel at ease, and take these three steps.