You're staring at the ceiling. It's 3am. Suddenly you realize you've been doing this every night for at least a week. When was the last time you got a good night's sleep? You've always been good at sleep. Even when everything else is going wrong, you've always been able to get in the bed, turn out the lights, and sleep for a good 8-10 hours. Hell, in the very worst times, when it was starting to seem iffy that you'd have the necessary fortitude to make it through the next couple weeks, you never had a problem going unconscious in a dark space to get away from it all.
But here you are, staring at the ceiling. Turning over from one side to the other. Getting up for a glass of water, pacing the halls. Getting back in bed, kicking the walls. Hands clenched into involuntary fists, punching the air above your bed. How long is this going to drag on? When do you get to rest? And why is it even happening? Everything's fine, isn't it?