Staying on Track at Celebrations

Is this a major challenge for anyone else? At times, I find that sticking to a regimen when everyone else is eating and having a great time a major downer. We recently celebrated a family birthday with lots of cake and goodies. And not for one day either. Oh, no. Our cup runneth over for several days afterward and we did indulge. But once I had the good sense to start spreading the wealth, by giving the goodies away, I managed to get back on track without too much damage to my overall goal. What do you do to stay on track during a big celebration or get back on track afterwards?

Of course this is part of the 50 Million Pound challenge we began earlier this year. I'd love to hear about how the rest of you are doing with your goals!