When I was drinking, I felt trapped too.
I wanted so badly to quit but was having a hard time. Finally I came to the point where I was so sick of my life I had to make a change. I stayed sober a day at a time and got thru the cravings without drinking.
At about three months sober I started practicing gratitude every day. The difference in my attitude and my life was huge. I now focus on the positives, not the negatives.
You can get sober for good. If I can, anyone can.