I'm definitely an internal-monologue thinker. I've tried breaking myself from it and going into pure thought(which feels like it ought to be an option, because I know how the sentence I'm thinking will end when I'm halfway through, and I've successfully tested breaking monologue and still proceeding with the mental understanding of what I was going to think), but I spend more time thinking "No! Stop monologuing!" than I save by not monologuing.