How do I not sound like such a hick when I talk?

I grew up in a normal neighbor hood. Not on a farm, I live in California in the city. But for some reason people always tell me I sound like a hick from a farm. I have that really boring voice like Bill Lumburg from Office Space. I just hate it. There is no art when I talk what so ever. My voice is just boring to listen to. My vocal cords vibrate when I talk but thats as far as it goes. How do I not sound like such a white trash hick when I talk? I want to have a normal interesting voice like everyone else.