I'm going to be sticking to my diet. Not because I'm afraid one day of free-for-all eating will make a huge difference to my weight loss, but because I'm finding it easier to avoid 'bad' food the longer I don't eat it. If I have potato chips, chocolate and lollies on Christmas I'm going to feel twice as tempted to have them on Boxing Day, then on New Years, then the next Friday, maybe during the weekend following that, oh what the hell a little a day won't hurt will it? Whoops I've eated an entire family pack of chips just like yesterday and the day before that.... AAAAAND back to my starting weight.
For me it's a slippery slope. The only way I can convince myself that I have to eat a healthy diet for the rest of my life is to actually eat a healthy diet for the rest of my life!
Mind you, I'm not advocating this for everyone. Some people can incorporate treat food into their diet and still lose weight. Sadly I'm not one of them. Through trial and error I've learned that this is the only way that works for me. I wish it were otherwise!