There are moments (right now, for instance) when I feel acutely that I must not have existed the previous day, or for the two weeks prior— that when I go to sleep, even if I wake up the next morning, I might not actually exist.
I don't wholly know how to explain it. It's like waking from a nightmare and being unable to shake the last few threads of the dream... and then having them hold you down throughout the day. Or the deeply-held conviction that the world just doesn't fit together, that everything really won't be okay in the end.
Is this an indication of some sort of issue? Is there anything to be done for it? Any thoughts?