A loud mind is not a failed sit. It is a mind you finally slowed down enough to hear.
On the hard days, shorten the sit. Three minutes is enough. Sit with the noise the way you would sit with a crying child — not fixing, just being with.
One trick that helps
Name what is happening. 'Planning.' 'Remembering.' 'Rehearsing an argument.' The naming loosens the grip. Then return to the breath, without scoring yourself.