Outgrown habits are like old skin. They don’t come off gracefully, but they do come off.

Old patterns do not end cleanly. They come away in pieces, at awkward moments, and there is usually a stretch where the new way and the old way are both half attached and neither is working properly. The ugliness of that stage is not a sign that it is going badly.

Expect the messy middle rather than bracing against it. When you slip back, treat it as a piece still peeling rather than a reset to the start. Keep going for another fortnight before you judge how it is going.