When I say I have not slept, I probably have but it is more dozing than actual full-fledged sleep; I am wide awake for several hours, then half awake for the rest of the night (I am aware of the passage of time which in my mind means I am not really asleep), then I sleep hard for about a half hour to an hour, and then the alarm goes off. I'm exhausted, but have to get up. Sometimes that will go on for days. The doctor gave me seven days' worth of Lunesta which did put me to sleep and I was able to wake up okay the next morning, but for me it was a completely dreamless sleep so it did not feel natural. It's better than no sleep, though and it did seem to jump start my natural ability to fall asleep. I will try the brain drift technique and see how that helps--in fact that might actually give me the best night's sleep because it will mean I have turned off the worrying. Thanks for the suggestion!