it's good news you have recognized your problem. re gf or friends in general, remember that's why they call it anonymous if you don't want to tell others. however your gf now-wouldn't she be happy and encouraging for your wanting to stay sober?
people, places, and things. it is suggested we stay away from all these things that encouraged our drinking.
people, family and friends- if friends, family don't respect that u're not drinking and drink around you, ask them to not Drink around you. if they don't respect that, you need to avoid them.
places-bars, weddings for now, any place alcohol is around avoid
things-letting our emotions get us wrung out.
AA saved my life. the more meetings you attend and listening at meetings provides some of the support you need. talking with AA members who've successfully stayed sober helps. ask questions how they did it, etc.
you can do this and find a new and wonderful life. willingness to stay sober is the key.