As kqc pointed out, mental illness is just an illness. Nothing to be ashame of. And like a lot of illness, e.g. diabetes, high blood pressure, it cannot be cured but can be controlled. Patient has to take medicine every day and visit doctor for evaluation regularly. Family support is very important. So if you, your family, or your firends have mental problem, please don't try to hide the problem and find a doctor. Don't wait for another disaster!