Normal? Of course it is. Search Google - How a person with Bipolar thinks. Top article tells you, and some other articles below that. Obsessive thoughts all the time are normal. Training thoughts one after another is normal. Test show Bipolar people have more obsessive compulsive thoughts. BP people think in extremes. I have said over and over, so called normal people could read that there, and would still not understand what it is to be Bipolar.