It sounds pretty awful, the saying, To Falling Apart. I mean, even when you googley the phrase, you'll notice some of the descriptors include, "...to drop wounded or dead, especially in battle." and "...to experience defeat, or ruin."
I mean, DAMN. That SO drives the point home, because it's exactly how that day/week or even a MONTH can truly feel. And it hurts, a freaking lot.