Alcoholism or alcohol abuse is considered to be a disorder. It develops gradually when you start drinking oftener and the amount s of alcohol that your body can not fight, and just surrenders.
1. When you develop alcohol dependency, it becomes the focus of your existence.
Alcoholics would not confess they have a problem, and nothing can stop them from drinking, ever losing family or job. There are times when they come to realization that their life is ruining due to this dependency, but in most cases this is just not enough to change anything.