Awww. ((((((((((((((((pinksoil))))))))))))))))

Boy, I know how you feel. You get addicted to something, and then its hard to quit, especially cold turkey!

How much soda do you normally drink on a regular basis? Does it usually contain caffeine?

Perhaps you can have iced-coffee drinks instead? Little less sugar (sometimes) but useful for weaning yourself off of highly sweet/caffeinated drinks.