article from About.com/Alcoholism;
Everyone gets angry occasionally, but alcoholics and addicts tend to have problems managing and expressing anger appropriately. For many, feelings of anger can be a trigger for a relapse, because that is how they dealt with anger in the past - using drugs to suppress or numb their feelings.
If you are trying to maintain long-term abstinence and sobriety, it is important that you learn how to recognize your anger and express it appropriately, rather than allow it to jeopardize your recovery. Anger is a normal and natural human emotion; how you handle your anger makes the difference.
Not Handling Anger Appropriately
According to National Institute on Drub Abuse (NIDA) researchers, alcoholics and addicts may have problems dealing with anger for the following reasons:
They fail to recognize the feeling or understand the reason for it.
Because of their addiction, they may not have learned to express anger in a healthy, productive manner.
They may have learned unhealthy ways to express anger from parents or other role models.
Addiction can impede self-learning and emotional growth of addicts, stunting their emotional maturity.
Many addicts are angry at themselves, but blame others, misdirecting their anger at those around them.