All-or-nothing thinking usually ends with nothing. Some is a real number.

Perfect standards collapse into zero the moment they are broken, because once the day is ruined there is no reason to do anything at all. Partial effort feels unsatisfying and counts completely, since the total is built from whatever actually happened rather than from what was planned. Twenty minutes is not a failed hour, it is twenty minutes.

Set a version of your plan so small that a bad day cannot break it, and treat that as the real target. When the full thing is impossible, do the fragment. Over a year the fragments add up to more than the perfect weeks you were waiting for.