Can cardiomegaly be reversed

I got cardiomyopathy at the age of 35... I was a drug addict and drank since the age of 14. I have kept my weight down and tried to be real careful about my salt intake..I also walk alot...when I was first diagnosed I had 10% use of my heart and was in congestive heart failure.I am two weeks shy of my 45th birthday and I am currently waiting for results of my last echocardiogram. My doctor said that I might be able to stop taking my medicine if all is well. He also asked me if I knew how lucky I was..I said I did. There is hope....