I agree with moremi on this one. Sometimes education from outside is better. I know my dad won't listen to me about anything, but if a doctor or "authority" type person says the exact same thing, Oh! then it's the truth! (But he never says I was right, either... I'm only 7 or 8 years old in his mind, I swear...)
It's hard for people to understand bipolar. Most will never even believe it's an illness and just some sort of character flaw... that's the stigma...