
There is a term in
Buddhist psychology that is used to describe pathological states that look like healthy ones. They are called "near enemies" because they can be closely embraced as virtues. The example that is often used is
equanimity and
indifference, these two states can certainly look alike, but they are as different as night and day. The virtue of Equanimity involves an inner balance that is not dependent on external conditions, like the person in the lifeboat who keeps a cool head when everyone else wants to throw each other overboard. The pathology of Indifference on the other hand is a self absorbed state of not caring.

Looking at the qualities that are commonly attributed to the artistic temperament there are many such "near enemies". For example what is the difference between prolonged, single minded focus, and a having problem with
perseveration? Or feeling intense, energizing inspiration and being manic? What is the difference between aspiring to something big and being grandiose? Is it inherently narcissistic to put on a show..... a
solo show? It looks pretty obvious in the performing arts.
Maybe it's impossible to tease these things apart, and unnecessary. Where would computer science be without
Aspergers? But I think it is helpful to try, because the romantic idea of the suffering artist is tenacious and probably based on this kind of confusion. It may give licence to a lot off unnecessary suffering by turning it into a kind of affirmation. I guess the question is; what does a single-minded interest look like when it's
not perseveration? What does intense inspiration feel like when its
not a manic episode?