My mind often tends to process and run in overdrive. Sometimes thats a good thing. I find that when driving while looking for someplace Ive not been before, I can easily absorb all of the incoming information. Also as an engineer, it helps to work out designs, details and disagnosis...
...but its also a curse, I find that with real life crap I tend to overanalyze. Some say thats the curse of being a Libra, but I suspect I would be this way no matter when I entered this world.
Good thing is though, if I am totally relaxed or exhasuted, it slows down.... maybe. I think thats cyclical too... at times I dont sleep well if at all, other times even after 12 hours I cant drag myself out of bed.