Thanksgiving and the Holidays are always excuses for people to indulge. For healthy recipes go to eatingwell dot com. You should be able to find healthy recipes and stuff that you can do over thanksgiving!
Try looking up fish recipes. Fish is lower in fat than red meat and even turkey meat so it should be healthier and depending on the way you cook it, less fattening. Its not traditional, but at least you wont feel guilty for over indulging after wards.