Marty,
What diet would you recommend for a person who has a pathological inability to recognise his complete lack of virtue and instead misinterpret his raging notoriety (for lack of aforementioned virtue) as adoration, instead?
Me, personally - I would be confident that 3-5g of psilocybin would almost certainly allow him to step outside himself, enough to look back and recognise the truth, for the first time.