The sleep chronicles, part 99.7

For the first time in I don't know when, I fell asleep on the couch before 9 p.m. It happens a good bit after 9 p.m., but the combination of several nights of less than six hours of sleep and getting up at 5 a.m. probably walloped me. But the nap I took gave me the energy to get some things done before we go to bed for real.
Sleep does all sorts of things for us, and if we don't get it, we function below our capacity, propped up often by caffeine and just going through the motions instead of going full speed.
What are some things you do to make sure you get enough sleep?