Life can knock the breath out of you without earning the right to keep it.

Something can knock the wind out of you completely, and that is what it does at the moment of impact. What it does not get is the long term, unless you concede it, and the concession is usually made slowly and without noticing. Breath comes back. The difficulty is that in the first stretch it genuinely feels as though it will not.

If you are in the winded phase, lower the horizon to hours rather than plans. Do the next necessary thing and let recovery take the time it takes. What happened to you set the conditions of this week; it does not get to set the conditions of your life.