For people with codependency, individual counseling can teach assertiveness, listening, and communication. Counseling can help you become more aware of non-helpful actions/behaviours, and work with you on developing new, healthier coping skills.
In the case of codependency though, counseling only helps if the counselor is aware of their own tendency towards codependence, or if the counselor has some understanding about the addictive push in our society.
Counselors, in the case of codependency, need to present good boundary setting and healthy living themselves during sessions with clients. If a counselor develops a working relationship with a client that has codependent qualities, again, the pattern is repeated, and therapy may not be as helpful. Some statistics show 50-80% of counselors have not addressed their own codependency issues. So one must be careful in choosing a counselor for this kind of support.
There are also self-help groups for codependency, called CODA groups. More information is available through local alcoholism services. If you can’t find a CODA group, there’s also ACA (adult children of alcoholics groups) that deal with similar issues CODA groups might deal with.