An old key stays on the ring for a flat you left years ago. It opens nothing. It stays because unhooking it feels like a larger act than it is.
Shadows get cast by something standing in the light. Liberation is rarely a matter of destroying the object. It's moving until the shadow falls behind you instead of across the path.
It won't be finished today and doesn't need to be. Today it's enough to notice one place where you're still obeying a rule written for a room you've already left.