I have this problem, too, but fortunately Ambien does the trick and has been for several years now. But to bring up your concern, Insomnia can have its roots in our ways of defending. As long as your unconscious can keep you awake, the better it can keep traumatic memories and feelings from reaching the surface of your mind. But, of course, that's an explanation not an answer. I believe that on-going therapy will eventually make it safe for you to fall asleep in peace, at least much of the time. I used to feel a wave of fear every time I drifted off. Sometimes, now, I can take a short nap in the day without having the fear wave prod me awake. Therapy definitely has helped, and hopefully I'll be able to leave off the meds .