What we need a campaign for is to take the stigma off of the phrase "mental disorder".

It's a minority mental condition that causes difficulty functioning in normal life and/or distress. Many "mental disorders" are such only because there is stigma around them, and it is the stigma that is the major cause of the distress. Mental disorders aren't something that people have decided need curing, they're something that people need help living around, often because they are stigmatized.