Welcome, Doda! You mention an apple a day, to that you may want to think about a multi-vitamin & a B complex as well, the B is to help the liver heal. Eat a balanced diet & lots of water too.
I think the best thing you have going for you is the willingness to do what ever it takes to stay sober. You mentioned going to meetings, if you feel as though you are on the verge of drinking go to a meeting first.