This is, I think, the despair that is the flip side of the hubris. It's manifesting as a profound sensation of powerlessness, inability to effect any change whatsoever. It renders every undone thing that comes to mind into a mocking reminder of my inability to do, well, anything useful, and renders anything I *do* do instantly invisible. (You did the dishes? Yeah, so what? The kitchen's still a mess, and what are you going to do with this not-on-your-diet fruit that last night's guest brought over? -- That kind of dialog.)
Of course, I am the worst possible sort of company in this frame of mind.