I don't think anyone here will hold past posts against you, after all I think most of us have quit and relapsed before at some point. We can't quit until we are completely ready to quit.
It sounds like you are finally ready to quit and that's a wonderful thing. The road ahead will be difficult but hang in there. The first step I would suggest is to get in contact with a doctor and make a plan with him or her about quitting alcohol. Quitting alcohol can effect everyone differently so it's a good idea to get feedback from a doctor. Secondly, getting in contact with AA or a similar support group might be a good idea, it often is hard to quit on your own and a group like AA can be invaluable and very helpful in your journey.