What I was trying to say is that if you're not wired or trained or whatever to use myth in that way it's quite hard to understand or empathise with those who do and possibly harder to retain sufficient humility to not feel superior to those who rely on such crutches.
The question I would always ask, what role does the narrative, the myth, plays in that persons life and in which context is it being told.
Consolation in grief - use any myth you like (even if I could vomit, when I hear some sWEEEEEEET one's)
political motivation - I would be very cautious, where the myth comes from, and what is behind it - conduct a proper deconstruction.
origin myths - again it is the question of why and not how. "how" myths are open invitation to riddicule.