When you’re watching your weight, or just trying to be healthy, holiday parties can be a challenge. And, they seem to multiply every year. There’s your office party, your neighbors’ parties, your kids’ parties at school, and of course, your own family gatherings. If visions of yule log cakes, cookies, and cheese balls have you panicked, take heart. You don’t have to forgo healthy eating this season. And you don’t have to skip out on all the merriment. Here are some tips to help you stay on track and avoid weight gain from all those holiday…