I drank Diet Coke from the moment my feet hit the floor until I went to bed at night, this went on for 35 years. I honestly drank the equivalent of 5-6 large bottles a day. I was never without a glass or can in my hand. At one point I'd have a glass on the go in the livingroom and one on the go in the kitchen, so I'd have it right at hand. I drank nothing else at all. I quit cold turkey 5 years ago. I had a headache for 3 days but never gave in. I have not had a sip of anything in all those years. I like the carbonization so I occasionally buy a Club Soda, or a clear flavored carbonated water. It makes a difference in how you feel without all the chemicals, especially when you drink the humungous amounts like I did. It is hard but can be done, your body will thank you.