Last night, for the first time in my career as a student (having made it to the last quarter of classes, my third year of graduate school), I thought to myself, "I could drink a caffeinated beverage to help me stay awake and alert to write the paper that's due tomorrow morning."
I've always known that that was something other people do. And it's not as if I had made a decision to avoid caffeine. It simply had never occurred to me that I myself might use caffeine to stay awake.
It worked beautifully, until I finished writing my paper and wanted to go to sleep. Then it was not good at all.
So I think now I will intentionally avoid drinking tea at night.