Some of us are lucky; we have thoughtful mother-in-laws, helpful husbands and supportive sisters. Spending the holidays with them is a joy. But some of us have a few wild cards in the family who can make this time of year a little more stressful. We’re willing to bet that a few of the following family archetypes -- from the chauvinistic father to the irresponsible brother -- may make regular appearances at your own dinner table. So how do you safeguard your stability through the holidays, despite wacky family dynamics? We asked the experts for some sanity-saving (and peace-keeping) tips.