One wonders who among us dares call themselves "successful"...
According to this logic, every scientist who failed to win a Nobel Prize is a "failure"......
It's all the more bizzare when you consider that Board Certification isn't required to practice a specialty in medicine, and downright laughable when you consider that you don't need to be a psychiatrist to recognize the fact that the nutritional theory of disease as espoused on this thread is one of the most obvious piles of quackatorial heifer-dust ever to be promolgated upon the ill-educated, the gullible, and the desperate.
Psychiatric training would be useful, however, in probing the motivations as to why anyone would promote this sort of errant crap.
Hey, I managed to pass the bar on the first try, so I'm at least more successful than, say, a Kennedy ;)