As I've already said, when possible come out... but, you just won't get much sympathy from me, as if you insist on staying put in the bible belt, then you have no right to whine to me about your situation.
At the end of the day you have to ask yourself: is my nice job worth living a lie for at least 8 hours a day for the next 40 years (I'm imagining you're 25 and will retire at 65)?
If the answer is "Yes", more power to you, but don't come crying to me, you've made your bed...
(I myself came from a VERY Catholic and VERY big Mexican family. Don't be a dumbass and assume my coming out was easy, especially as I came out to the whole gang... but I made that decision because in the long run it was the right choice and because I only have one life to live, and did not want to live that life in a 24/7 lie).
So, I hope you're comfortable in your self-imposed prison. I'm sad for you, as I remember how the closet felt like a coffin, and I don't like how you've given up already.
(I came out, moved to a liberal state (California), and got myself a nice high-paying white collar IT job myself, "despite" being gay.)
You do have a choice, but if you choose the closet, then suck it up and shut up.
(I'd rather you take steps to get you away from the bible belt and out of the closet, as I think it's obscene in this day and age to be still in the closet, but just like alcoholics, you have to want to help yourself...)