Let the picture come out blurry. The moment was clear, and you were in it.

Taking the photograph and being in the moment compete for the same attention. A clear picture usually means somebody spent the good thirty seconds managing angles, checking the result and trying again, which is thirty seconds of the actual event spent elsewhere. A blurry one is often evidence that you were present. The image is a souvenir, not the thing itself.

Take one photo and then stop. Put the phone away and finish the moment, and when the picture turns out badly, keep it anyway.