I would look into Karma Yoga. The nature of Karma suggests that fundamentally there would be no state of "I kicked my alcohol habit". Rather, you simply choose not to drink each time and obviously you build karma for each time you don't and it becomes easier.
I struggle with similar addictions of the senses. The act itself I believe it not the worst part - it is the shame and guilt. I think these emotions can help to encourage avoidance next time, however, it is not beneficial to become attached to these emotions. Next time you feel guilt at having committed an act of addiction observe it. Feel the feeling of guilt as if you were a scientist and look into it's cause, it's origin.
Also, from a nerobiological point of view, the brain is a plastic organ. It changes every time you act. Every time you give in to the alcohol you strengthen the nuero-pathway for "grab a beer". When you choose not to you strengthen the "I didn't grab a beer" path.
Interestingly, it has been discovered that the most effective method for breaking an addiction such as your's is doing *anything* else. The next time you want alcohol, stop and take 5 breaths and think about the urge and really think through it. Do ANYTHING else. It doesn't matter if its pushups, listen to music, call someone, water your garden, or comb your hair. ANYTHING. It is proven that it is more effective to replace the habit with something else rather than just sit there and ignore it.
Ultimately, as with my own addictions, I think you go through the motions enough times. Certainly I've repeated the "give in, shame, set intent to never do it again, repeat" enough times and it still happens. But if your faith is in yoga and meditation eventually you'll gain the strength and each time will have a larger gap between events until it never happens.
The main thing is to not become the shame. You can observe its presence and analyze it and breathe with it, but do not become it. Know that it is the ego that identifies with this emotion and that your larger self is not subject to shame and such emotions. That you could, as Jim and His Karma said, "Be on a rollercoaster blasting Jimi Hendrix through headphones and eating a bag of Cheetos" and your soul is untouched. Your ego, which most of us identifies with 98% of the time is tangled up in the guilt that for some reason reacts to this addiction and this creates a fog so that it is more difficult to see your pure soul, however, know that it is beyond such things and that there is no earthly thing you can do to change it.