[Lost and Found]

The high-fructose corn sweetener that is in most processed foods is actually addictive. So that might be the cause. Because there's a ton of that in soda. Either way, my recommendation would be just to slowly cut off your soda intake. I don't recommend diet soda, that stuff is actually really bad for you.

Maybe, you can try mixing sparkling water with juice, (or just getting sparkling juice, if you have more luck finding it than I do.) because it's sort of like soda, but it's not. And start drinking that instead. Like, you could drink less and less soda, and more and more of stuff like that, until you don't feel like you need to have soda anymore.

Good luck.