So sorry about your inability to sleep. I've got the same problem lately. I like that doctor's idea that one is afraid of missing out... I have a vague sense of feeling so...
I find that when I get into bed my mind starts churning all those thoughts that have been conveniently hiding out by day. And I think of this and I think of that, and I look at my watch and I've been here for an hour, two, etc.
So I figured, lemme write down whatever's on my mind, get it onto paper, this way I won't fear I'll forget these thoughts, I can always refer to my paper. Also, writing is a way of purging for me.
I used to write into a journal by pen. Lately though I've been typing on "Word". I write whatever is on my mind, no holds barred. Everything and anything. It can take an hour to purge my mind, but it's worth it, still better than lying awake for 2-3 hours.
I know it's late now, don't call me on it... I did go out tonight with some friends, something I don't do often.
Also, I've not been exercising lately and I believe that's a contributor. What do you say we both recommit to exercising....not too late in the day though. My exercise regimen is so simple: I turn on the music, and just submit to spontaneous movement, lots of jumpy-style, quick-moving, getting-the-heartrate-up movements, clapping hands, raising knee to chin, raising arms, bending in and out, anything goes...
I also take some natural supplements to help my body relax and make me sleepy.