I find the idea that "the map is not the territory" useful in considering delusional beliefs. It keeps belief and reality separate, where "belief" could include

I find the idea that "the map is not the territory" useful in considering delusional beliefs. It keeps belief and reality separate, where "belief" could include things you know to be hallucinations etc (though I've never had those). https://wiki.lesswrong.com/wiki/The_map_is_not_the_territory https://wiki.lesswrong.com/wiki/The_map_is_not_the_territory