With insomnia nothing is really real. Everything is hazy, like walking through a fog at dawn. It's never really dark outside, but it never really gets light out either. You're never really asleep or awake. You just kind of coast, drift.
Memories have a funny way of slipping away into a haze.
It's like when you get really drunk. You don't really forget anything. If someone reminds you of something it comes back clear as a bell. You can remember everything about your day, but you have no idea when the last time you slept was or how long you slept for. The worst part of insomnia is being awake.