These are only a couple of examples that point to the complete lack of congruence in many “breakthrough” experiences. I assume that every belief—no matter how limiting, archaic, or unlikely it is—has a positive function. Protection from some kind of harm is a very common function, one that is certainly present when contemplating the challenge of a firewalk or leaning on a sword! Whenever someone “breaks through” or “overcomes” a limitation, that means that no respect whatsoever is given to its positive functions, or other reasons for the limitation. It is simply “broken through” or demolished, just as an invading army conquers all opposition.
While some people's limiting beliefs may be purely imaginary, others are very real, and usually there is at least some degree of reality or validity. If we hold to the fundamental NLP idea of entering the other person's map of the world, then we also need to respect their limiting beliefs, no matter how extreme, ridiculous, or harmful they might appear to someone else.