The holiday season is the most difficult time of year for my patients to stick to the healthy diet guidelines I've recommended for them. So they're always relieved when I explain that what we eat most of the time is more important than what we eat just once in a while. There are some exceptions, like people with severe food allergies and those who struggle with food addiction, but most of the time I don't discourage an occasional indulgence as long as some basic rules are in place. Follow these ten tips to eat well and stay healthy this holiday season.