SS it will get better once you get a program of recovery in place. Quitting is physically rough. Takes much strength to go through the withdrawals and not to pick up the bottle. Staying sober is harder because it requires us to make changes in our life and relearn how to live life without the bottle in hand.
Once you get out of rehab there is plenty of support here and where you are. AA an option. Not just attending meetings but really working the steps.
I have made many changes in my life and am still making changes. I am early in my sobriety but there are so many out there who are living full lives in sobriety. 20, 30, 40 years sober.
Hang in there. It is rough now because the alcohol is gone and the sense of panic kicks. Just work for the moment.....sober. Recovery will help you sort through the rest.
All the best.