I know accountability works. Why haven't I set any up?

You already know this: habits people track with someone else tend to stick. Habits done alone, in private, often slip. You've said this yourself, maybe to a friend. And yet the habit that matters most to you right now has no witness. Just you, alone with your intentions. This is not a willpower problem. You have plenty of willpower. You're spending it every day to prop up a system that was never built to need so much of it. That's like rowing by hand when there's a sail on the deck, still tied down. The gap here isn't knowledge. You have the knowledge. The gap is one small, concrete act: telling someone, or something, that this habit exists — and asking it to check on you.