I used to drink diet cokes all the time and wasn't a fan of water like you. Here is what I did. I started making myself drink water with one of my meals and I limited my diet cokes to 3 cans a day. Gradually I replaced each of those 3 diet cokes with water. I usually dropped one can of soda per week. Now I don't miss or crave the diet soda like I used to. I actually like water for the first time in my life. Plus now when I do drink diet coke it makes it that much better.

Think of it like this. Your taste buds are addicted to diet coke and you have to detox them. This actually works with a lot of healthy foods too.