The good news is that if you're not alcoholic, this won't be all that difficult. If a medical detox is in order--that's the safest route if you've been drinking heavily and for an extended period--do that, and then you can go back to live as a sober man. If you are alcoholic, though, whether or not you like the word, you might find it more difficult. For alcoholics, quitting is the easy part. Staying stopped takes some work.
Lots of folks will be through here offering different options. AA worked for me.
Peace & Love,
Sugah