Lots of good advice, most rehab and detox centers reccommend going to AA, getting a sponsor and doing at a minimum of 90 meetings in 90 days. The reason behind the 90 in 90 I have heard is research has shown that in order to break an old pattern and establish a new one takes about 90 days.
I owe my life to AA, I drank for 40 years and tried everything except AA to stop for the last 10 of those.
Simply be honest with yourself, have an open mind and follow directions, that is what I did and here I am now, relapse free, happy, sober and free of the urge/need to drink, 130 days sober.
In regards to the anti-craving medication, I was on revia and I quit taking it after about 7 days, I did not notice a bit of difference, but I was following directions very well then. I am sure they help some folks more then others, so go with what you feel helps.