Keltham holds forth to warn Pilar of the mistake called 'rationalization' -
- wait, it's called what in Taldane? That word shouldn't even exist! You can't 'rationalize' anything that isn't Lawful in the first place! That's like having the word for lying being 'truthization'!
Well, anyways. Motivated cognition, don't do that. If you've literally never had any lessons about that... maybe keep an Owl's Wisdom prepped, wait until the next time you want to believe something and notice yourself making up arguments about it, and hit yourself with the Owl's Wisdom so you can watch all the little bits and pieces that go into the process.
Maybe adults in Golarion literally try to argue themselves into things? But that's not the failure mode that dath ilani worry about; anything that explicit and deliberate is something you can just decide not to do and then you're done. No, what you've got to watch out for are those subtle ouches and subtle yearnings that might lead you to flinch away from one idea and flinch towards another. That's the part where she can maybe do a few Owl's Wisdoms and speed through what dath ilani children take some years to learn.
Though now that Keltham thinks about it, when he was very young, they did do exercises to notice explicit rationalization by way of having kids actually do that? Well, those are pretty easy and fun to run through. Keltham will start by proving that the sky is orange, then arguing that everything is upside down, then showing that humans are really a kind of fish; and for her own exercises he demands Pilar demonstrate that Keltham's shirt is secretly the real Keltham and that nobody should ever go outside.
See how your brain has to stretch and reach when it's trying to argue something that isn't so? Well, remember that feeling; and then, if you notice feeling it again, halt melt and catch fire, don't do that.