I think alot about everything. I like your discripttion of an internal monologe, that sounds like me. Sometimes I just talk in my mind thinking of everything I would say to certain people as if they were there and I try and imagine what they would say. I've experienced multiple thoughts at once. I'd describe it like being at Best Buy and all the tv's being on different channels at the same time.

I know what you mean about background noise. I think the reason it helps is because it gives a part of your mind one thing to focus on while you use the other part. Otherwise its like two parts of your brain are competing and you can't stay focused on one or the other.

Unfortunatley, my mind doesn't turn off when I'm trying to go to sleep but I'm hoping the meds will help more with that.

I'm not really sure what my mind is like when I'm depressed. I don't know if my mind ever really goes blank. And when I try I just keep thinking of things. I can stare off into space but even then I'm still thinking of something.