Umm, have never been well-disciplined in financial matters et al, or in personal care as drinking, smoking, drugging, but with age, as a wine, improving. Have been relatively physically fit all my life. In moral and ethical considerations have always been pretty well disciplined. Stubborn, not really more than when feels right to be sometimes. Nah, don't have overly large ears so can't be. That isn't logical is it, though some people's logic is sometimes as loose as that example was. Is right to be stubborn when faced with some other's unreasonable and illogical obstinacy.
It was Plato who said, “He, O men, is the wisest, who like Socrates, knows that his wisdom is in truth worth nothing”