I don't know how much of a difference drinking only water will make but I'm certain that it will at least cut out a couple hundred calories a week that I get from various drinks. I also won't be ingesting any unnecessary chemicals from those diet sodas I like. The one exception I'm making is that I will not include my breakfast smoothies in this "water only" challenge. I don't believe that counts as a drink since it is being used as a meal replacement.
Will I make it? I think so. I've decided that everything comes down to willpower. While that is a simplification I believe it to be true. I'm making the decision to have the willpower I need to accomplish this and other challenges. Wish me luck!