Donna you might want to change what you tell yourself about soda. Speaking for myself, If I say I won't drink Pepsi anymore I absolutely crave it. If I tell myself I just won't have it right now, I don't miss it.
To make a long story longer, when I was in my 20's I was drinking AT LEAST one carton of Pepsi a day. At that time it was the 6 packs of 16 oz bottles. In addition I was not eating much. Most days I would have a pack or two of those cheese and peanut butter crackers. (5'7" and 105 lbs yikes) Needless to say it didn't go well. I ruined my stomach, doctor put me on an ulcer diet. I was on that diet for 3 months, and lost about 10 pounds. I went through hell with the shakes and headaches and the whole nine yards, that went away after about a week. But, I craved Pepsi every minute of every day for three months because I knew I couldn't have it. The food I didn't really care about since I wasn't really eating anyway. To this day, 30 years later, I still have to be careful about what I eat. But, I know I can have a Pepsi anytime I want. So I don't even think about it some days.
Oh and I have never been able to tolerate diet drinks of any kind, so I always drink the regular.