People saying:
"Man I'm going to play Halo 2 as much as I can because it's ending in a month"
"Damn, that last week I'm going to play Halo 2 every minute"
"The last day, I'm going to play Halo 2 right up until it ends"
So you're planning to make yourself extremely sad when that day comes. If you play less and less of it when it comes to that day, you won't be as disappointed than if you are having so much fun, than it's instantly cut off.
That's just fixing yourself to become extremely depressed when that day roles around.