I used to have this issue...and realized it was tied into my fear of feeling out of control. If you think about
it...we spend much of our day managing our anxiety...protecting ourselves from it, rather than accepting it at times.
Then, when we surrender to sleep, we are in fact, letting something other than ourselves be in charge in a sense. Sleep is a somewhat helpless state...and one where we are not fully in control.
Working on relaxation exercises before trying to sleep may somewhat bridge the gap between the awake and asleep state...
...and in the bigger picture, accepting the anxiety, rather than fighting or fearing it should be a goal.
(this is not to say that you throw in the towel on your management...but rather making acceptance a part of your overall recovery outlook)
Peace and progress!
"Courage is not the abscence of fear, it is feeling afraid and doing it anyway!"
"Worrying does not empty tomorrow of its troubles...it empties today of its strength."
Corrie Ten Boom
Panic Syndrome recovery due to CBT