Almost 42 hours

I'm sitting here unable to fall asleep. Of course it doesn't help that I currently have a computer in front of me but for some reason I do not feel tired at all. Here it is 11pm and I'm wide awake. Normally that would not be a problem but today at this exact moment I have been awake for 41.5 hours. So, what do you do to help yourself fall asleep. I would really appreciate some suggestions for tonight or tomorrow night or any other future night.