ABC News had an interesting article about Failure yesterday. "Doctors Say the Most Successful People Fail Several Times Before Reaching a Goal"
They also said that the most successful dieters look at breaking a New Year's resolution not as a failure, but as a time to realistically tweak the original goal. (Hey, tweaking the goal? I remember a talk about that.)
So go read it, and don't feel bad if you are not getting to perfection on the first try.
And remember to tweak your goals!