I've been feeling the same way for a couple of weeks, now; I call it "cocooning." I think it's a way of detaching from pressures and expectations that we place on ourselves (and allow others to place on us, as well) to function at a certain level - it's a type of "sleep." From long experience I have learned that I will "awaken" eventually and things will get done, and I'll actually feel better for the "rest." So, just rest for now and be at peace about it.