I love my voice and if I lost it I would be devastated, but...

I love my voice and if I lost it I would be devastated, but I just don't want to live my life like that. I am thinking of giving up smoking for general health reasons, and it was really embarrassing last weekend when I had overdone it and couldn't sing at all, which meant that I had to mime at a big outdoor festival. I felt really bad about that.