Mine may be a little different in that my sleep problems stem from my lupus, however, it's a sleep problem none the less.
It's great your trying to write things out since that is a good way to get all that jumbled mess in you head to settle down, i've done that too and i've had nights where my mind is racing a mile a minute and I can't stop it.
Here are some things I do and they do help.
-go to sleep the same time everyday and wake up the same time, this is hard I know especially when you can't sleep but after a while of trying and getting to bed and waking at the same time it really helps believe me.
-cutting coffee or at least not after 4pm, try to cut caffine period but for me I like my coffee in the morning or mid afternoon, but i've cut to just one cup a day, and usually in the morning and that's helped
-cutting or limiting alcohol that will help too believe me
-try soothing music I have some classical or ocean sounds they help relax the brain but try whatever music you find relaxing
-try to limit sugar intake and especially before bed
-for me reading before bed makes me tired, if that works for you try it or else do whatever you find relaxes you like a bath, or shower, or a certin tv program whatever
-lastly if you are still having problems you can try sleep aids, either over the counter, or talk to your doctor sometimes insomnia can be an underlying problem to something else so it's a really good idea to check it over with your doc, they can give you some stronger sleep aids.
Hope that helps