Am I supposed to realize what this means? I do the only thing I don't remember: anything else.

As soon as I feel it beginning, the premonition that I'm going to do something I've done before, I stop. I don't know if it's good or bad, and whatever I was going to do certainly isn't either, but I interrupt the flow. I guess that I have to do something different (at least this time around).
So I do. Anything different, that is. Nothing earth-shattering, I usually get around to doing what I was going to do anyway. Is this what getting older feels like?

Oddly enough, this describes not only what I'm writing about, but something else entirely.