I had to be up early today, couldn't get tired last night.
I had to be up early yesterday, but first stayed out late, (totally worth it) and then still couldn't get sleepy.
Both days I spent hours on my feet, and wore myself out, but still wasn't tired.
I have to be up early tomorrow, and at 4AM on Tuesday.
Tonight I'm going to have to try the dreaded "go to bed at midnight, lie there, and pray for sleep" technique. Hopefully combined with warm milk/tea, and a shower, it'll cut the waiting to fall asleep time to less then 2 hours.