Lost in Shades of "I'm Okay"

This piece contains discussion of depression and hopelessness. Please read with care.
There is a particular meanness to depression.
It doesn't always arrive like a storm. More often it comes like summer heat: slow, saturating, difficult to argue with. It settles into the walls, into the body, into the space between one thought and the next, until everything feels heavy with it. The house seems to take it in. Even the light looks tired by the time it reaches the room.
I have known days when the floor felt like the safest place to keep my eyes. Old wood, scarred and splitting, honest in its damage. Floorboards don't ask anything of you. They don't expect performance. They don't require you to explain why lifting your head feels like lifting stone. Looking down became a kind of prayer then, if prayer can be made out of exhaustion. I studied every crooked crack as if it might tell me how to stay in one piece. Lost in shades of "I'm okay."