The BEST advice I have is that when Thanksgiving is over, IT IS OVER! The worst thing you can do if you are on a serious diet plan is continue carrying over Holiday food and your Thanksgiving meal for the rest of the week! So that means, left overs stay left at the place you ate and if Thanksgiving was at your home, make sure you encourage your attendees to take some of the food with them. They don't have to take everything! You can still enjoy some of it, like the turkey which is really good for you and also some of the vegetables.