I looked back at the book, You're totally right, my apologies.
WoB talks about the Herald's madness(Idk how to link it, so forgive me).
Questioner
The Heralds seem to be insane in the ways of their Divine Attributes, at least somewhat. Is this because they're Heralds? As Cognitive Shadows, they're subject to people's perception, like how spren are?
Brandon Sanderson
That's a very astute question, and yes, that is influencing them quite a bit. I'm doing something here with the Heralds. Like, I want the Heralds "madnesses," as we call them, to be magical diseases. And the contrast of something like Kaladin's depression, which I'm trying to treat very real-world. I'm trying to treat them as these things that couldn't exist in our world. They're fantastical mental diseases, like we have fantastic physical diseases in Elantris. So I did make them thematic, and I would say part of the reason for that is people's perception of them and their mental state reacting against that. And that should be a theme among all of the Heralds.
The madness of the Heralds is a mix of the torture given to them on Braize, as well as a "magical" disease, given to them by people's perception of them fighting the actual ideas of themselves they have in their heads. This could be fixed 2 ways I believe. One, Kaladin's therapy helping them restore their original sanity, and 2, Szeth's wife's account of the final days before Stormfall, given before each chapter in the first and tenth days. This could restore the people's ideas about them, changing the public perspective and restoring the "magical" aspect of their mental state.