if you are taking a sleeping tablet, shouldnt you be asleep? sorry if im sounding really daft here.....
if your sleeping tablets are not working, why take them? maybe do what you said and not have them for a few days and see...
i think its a habbit you have also gotten yourself into.. which it just takes some sheer will power.. (something i cant really comment on at the moment) and its just take one night at a time...
dont get out of bed... stay in bed and have what you have next to you... and then do something in bed... dont let yourself out... will power is the only thing to get you through this....