weight loss and being accountable

At work, we have a voluntary program to keep us, and our weight, accountable over the holidays. I know I need to focus and pay attention, so I signed up... What the hell? Why not? If I can do this and hold myself accountable, maybe I can make it thru the holidays. I already know what I need to do. If I do what I'm supposed to, my entrance fee is returned. I think I can... I think I can.... I have to... I have to.... I must.... I must....