When you feel lonely like this go to more AA meetings. Did you know that a lot of alcoholics suffer from PTSD? This can make it harder to commit to staying sober and learning how to deal with your challenges instead of using the alcohol to get away from them. So, when you go to meetings you will have others around you that are also working on staying sober and slowly learning how to live their lives differently. Actually, it can help if you can also see a therapist too. A lot of people go to meetings at night for the same reason, being lonely at night.