It really requires some professional assistance. DIfferent people have different physical and emotional reasons for drinking.
You could ask a doctor for Antabuse, but it does not stop cravings, it just sets up a violently strong negative physical reaction to alcohol.
When you are addicted to alcohol, it has become the replacement for a whole range of things: friends, love, family. You drink when you are sad, drink when you are happy, drink when you are blue.
Thus, it requires a whole range of replacements when you stop. Physical activity can help. Seeing a therapist if you are sober now can help, because you can take a look at any underlying emotional problems (often alcoholics are self-medicating depressives) that you have. While some people are put off by the religious aspects of AA, the idea of a sponsor that you can call when you are struggling and get support is a good thing.
Good luck.