winter blues. How do you stay motivated?

Hi everyone, I'm trying to lose 10lbs over the winter but I've found it soo hard to stay motivated when everyone else around you is eating junk food, and when you're bundled up in sweaters and coats and no one can see any extra weight anyways. Plus, the weather makes it so hard to exercise outdoors (I love going for walks and jumping on the trampoline, but I cant bring myself to do that in cold, snowy weather). Treadmills and gyms bore me, and the only thing I find myself really motivated to do is wii dance (which burns very few calories, but I do consider it a form of fitness). Its also challenging to remember your goal when you're freezing cold and just want to be a fat polar bear, lol. And numerous layers hide unwanted fat so easily, so its hard to remember you're goal when the only times you see yourself "disrobed" is when you get into the shower, and even then I'm hopping from foot to foot desperately wishing to get into the warm water because I'm so cold. I'm one of those people who is always cold, and always ends up bundled up in layers while everyone else is in t-shirts and shorts. So, my question is, how do you stay motivated in the winter? I'm thinking of picking a pair of "weight loss jeans" that are just a little too tight to wear to remind myself not to gorge and to be more active. Other than that, I'd love to hear some of your tips for the winter blues!