Just a thought....but maybe you do need to be on drugs, as in psychiatric medicine.

Many people who abuse alcohol and drugs have an underlying mental health issue that they are self medicating.

Have you ever considered going to AA meetings? (Alcoholics Anonymous) you can find help and friendship there. A feeling of emptiness is pretty common for people when they try not to drink. You have to learn how to be sober. It's like recreating yourself from the beginning.

As far as moving out from your parents house. This is a normal process that you need to go through. Yea forms suck! But it's part of being an adult. Your mother's issue with her children is HER issue to deal with. It's not realistic to expect her children to not grow up and get on with their lives.