Over from HPMOR, and have been thinking about teaching exercises. Disclaimer: I haven't read all the comments, and apologize for any redundancy.
The two sources for exercises that I thought of first were CBT treatment for depression--as you mention briefly in the post, it turns out that overgeneralization about oneself is a big component of the disorder--and writing classes. Looking up the relevant CBT training suggests that it's actually quite similar to many writing exercises, which suggests that it also ought to generalize to your training. Unless tha... (read more)