This is weird. I was mentioning that I don't have an internal dialogue with a friend at work, who at first just flat out didn't believe me. He then said that I must visualise my thoughts which I'm pretty sure I don't do either. It's a completely different and abstract thing for me, almost nothing. Like remembering something without words or pictures. I really can't explain it. It's just like things happen, but I know I decided to do them.
Never really thought about it before, I just assumed thats how it worked for everyone, I can't imagine it happening any other way. An internal monologue sounds like a real pain.