I have become a happier more positive person. Once I realized that my happiness has to happen first in my mind then it happens in the real world for me. Also I have been really able to quit worrying about things because by worrying I am actually concentrating on what I don't want, which will evoke a negative outcome. I realize if I can keep my thoughts simple and focused, and I take deliberate action my thoughts become realities.
Basically maintaining my recovery has helped me become positive because I don't look at it like it's a chore. And a majority of my recovery now is just abstaining from drinking. Once I became OK with the idea of never drinking again everything else falls into place.