This is a very old post, and probably not relevant any more, but I always like these thought exercises and comparing them. I did it differently from all you Ni people. I started trying to draft a good working definition of/list of synonyms for seriousness and came up with "dedication, lack of levity, gravity, importance etc" I didn't even think of tying it to a person or a concrete experience. But I'm also a verbal rather than visual thinker. To build off the story metaphor, the voice in my head is the story's navigator. I don't know if I am crafting it or just being pulled along for the ride