Yes, I agree that this seems like a good thing to try for both dreaming and rationalization! I've recently gotten myself a notebook for at home, just for doodling ideas about the things I'm reading. It might be a good idea just to try and expand that to dreaming, rationalization and other things too, just to see what comes out. To provide myself more reliable access to an "outside view" of myself.
Anna Salamon and I are confused. Both of us notice ourselves rationalizing on pretty much a daily basis and have to apply techniques like the Litany of Tarski pretty regularly. But in several of our test sessions for teaching rationality, a handful of people report never rationalizing and seem to have little clue what Tarski is for. They don't relate to any examples we give, whether fictitious or actual personal examples from our lives. Some of these people show signs of being rather high-level rationalists overall, although some don't.