I cold turkeyed cigs after 35 years, and when it came to my Diet Mountain Dew addiction, mind you that was probably 120 oz a day, it seemed impossible. First think in morning was right to the 2 litre in the refridge. How I did it, and now have maybe 1 soda a week, is this: I started my day out with a NoDoze pill, to give me a Caffeine kick. I then would take a 1/2 tablet whenever the 'lack of caffeine' headache hit, and drinking lemon water, I even filled my 2 liter bottles up with water and put in fridge so I was still in the pattern of going to fridge.. In just a couple days, I seriously was unhooked from the soda addiction, that simple. Like quitting the cigs, it's a mind over matter thing, you will and can quit when you are ready to. . I certainly am no Dr, just this worked for me. I do start my day with 2 cups of black coffee, so the caffeine jolt still is there.