Diet Coke, going,going,gone!

So on top of everything else the past few weeks, I am trying to give up Diet Coke. Now any of you that really know me know that Me without a diet coke is like a baby without it's bottle. Giving this up is like asking me to win a gold medal in sprinting, Ha-ha! This has been a very difficult feat, but i am down to 12 ounces a day, which is remarkable. I thought that it would help me lose weight, but guess what it has not! I feel very frustrated it seems as if many people can try a little bit and lose alot. Not me, I exercise four times per week, join a soccer team, give up Diet Coke, count my calories daily and gain a pound?? What the hell!@@ Diet coke will remain out of my life until I am convinced that it does not affect my weight and then, I might keep on with my addiction! We hate to lose the things we love.