I know what's always on your mind. Everything that once was just a shadow, just a trick of the light, just a far-off noise. Turn on the lights, write it down, make a log, see your doctor.
When did gravity stop pulling you down, and what replaced it? What's that blurring the edges of your vision? What's that obscuring every other sound? Now this depth is familiar to you. Now there's only one thing above you that matters.