What can you do to help someone in denial recognize that they have a problem?

One of the big problems in mental health is that people won’t comply with drug regimens or any other treatment protocols if they don’t believe they are ill. I know this is true for bipolar disorder, and I guess it is true in other disorders.

This is also a problem with alcoholics or other addicts. Many people don’t think their drinking or drugging is a problem. Yet those around them are feeling adverse consequences—negative changes in behavior that is caused by the addiction.

Do you have any ideas about what other people can do to help a person recognize that they have a problem? This recognition is crucial if a person is going to be committed to working on getting better. Do you have any positive experiences with this problem? Could you describe the situation and what you did that worked?