Insomnia

I used to have the sort of horrible insomnia this woman talks about:

Knowing I could get only six hours of sleep at the most, I would start to panic. Worrying about not sleeping kept me from sleeping, and by the time my alarm clock sounded, I was lucky if I’d gotten four hours.

So I'm glad they didn't have Ambien when I was in high school. The reason I think that article is interesting, though, is because of how easy it is to become addicted to something. Even something as apparently innocuous as Ambien. Now I understand why so many sleep aid commercials talk about being "non-habit forming."