I have this problem too.
I try to use my senses at those times, and breathe deeply and stop fidgeting (not easy for me to do). I imagine I'm watching a movie and concentrate on what is happening right now, in front of my eyes.
yeah, the problem is that while the movie in my head is on a commercial... i'm channel surfing. it all runs together eventually.
My imagination is more entertaining and stimulating than TV . To numb my mind, I actually watch TV . I wish I could write it all down. I'd be churning novels out if I could capture this stuff (or had the motivation to).
i once decided to write down the "thread" of how i got from one thought to another. my goodness it was a long stream of information in a short amount of time.
The biggest problem is when my brain goes into overdrive as I'm trying to fall asleep.
ENFP Male: E-74% N-95% F-58% P-84% 3w2
"I feel there are two people inside me - me and my intuition. If I go against her, she'll screw me every time, and if I follow her, we get along quite nicely." -Kim Basinger