one suggestion would be to do some vigorous workout during the day..this would get your body tired...

have you thought about acupuncture? helps me with my anxiety and tension...

I don't know, this is just a thought, instead of trying to fix yourself why not do something really fun during those hours of the morning. I have often meditated. It's one of the best times because there's so much stillness. You could have a bubble bath, watch a romantic comedy, paint, read, put your headphones on a dance in the moonlight.

Maybe it's not a problem, maybe it's just an opportunity to reset your energetic space at the vibration of joy or love or amusement or whatever you want.

Breathe very slowly and deliberately. When the thoughts come, slow them down to match your breath.

i had a similar problem...every night at around 3:30AM i'd wake up and brood and brood until about 5:30...this went on for about 3 years...I had done a series of karma clearing ceremonies for the spirit of my grand mother who died the same night this problem began....after the end of the ceremonies, that, among other symptoms i was dealing with disappeared. For 2 years now, a close friend of mine has been waking up at around 2am every single night, in a panic, thinking she 's late for work....it started around the same time a close cousin of hers died suddenly in his sleep....i told her about these ceremonies that she can do, but she thinks it won't change anything...but i think ancestral influence is an area to consider for not only sleep problems but many health issues....one problem is so few people understand this and it's very hard to come across a person or organization that does this kind of thing.
another thing that might help is to give up your worries to the creator...creatress?.....and try to let go of control, knowing that all things are taken care of with or without you....it's all okay...
-a-

Do a death discreation with O5. Find the article on Google groups.