Given that no one can define what a "properly disciplined mind" is, I would hope that anyone suffering from the symptoms of ADD or ADHD would seek advice from a health care provider with actual experience in things like brain chemistry.

Sorry but I find your contention to be dangerous, the idea that simply disciplining one's mind will cure actual physiological problems and chemical imbalances is simply incorrect.

No offense intended but what you're claiming is akin to telling a person suffering from epilepsy to just quit having seizures by disciplining their mind, it simply doesn't work that way.

JohnE