You can take a day to feel defeated without agreeing to remain there.

There is a difference between resting inside a bad feeling and moving into it. A day of feeling flattened is often the honest response to something that went wrong, and trying to skip it usually just delays it or turns it into something less recognizable. What matters is that the day is a day, not a lease. You are allowed to sit down without agreeing that this is where you now live.

Give yourself the afternoon, properly, without a productive spin on it. Then pick one small ordinary thing to do tomorrow, decided in advance so you do not have to decide it while low.