its a funny thing because I used to be exactly the same and I have a lot of head chatter constantly going around and even as a young girl i can remember my dad stroking my head tryin to get me to drift of and I couldn't. its about clearing your head as much as possible and not trying too hard to sleep jsut watch some tv read a book etc try and empty your head. that aside its easier said than done - also some herbal pills do work to help you drift off but you have to take them well before bed time i find - my dad used ti say to me as long as you lying down you are resting even if you don't sleep
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