I begin by layering up in pointelle silk long-johns from LLBean or Land's End. Thick socks, fuzzy slippers, pants, a long-sleeved T or turtleneck and a light weight fleece jacket. On super cold days a scarf and gloves..occasionally a knit hat.
A small box-fan heater is a one room option, hot-tea or coffee and letting the sunshine in to warm the place up.
My home is big and needs plenty of winter-prep to keep the cold out. Staying upstairs is warmer, but not a good option during the day. Turning up the humidifier if you have one can make it feel warmer as does baking bread.
I don't like the cold because it makes my body ache.:willy_nilly: We don't even keep the temp that low during the winter, but it feels cold if I'm not bundled up. My mom sent a bunch of crocheted and knitted blankets and they are wonderful. I'm thinking about asking her to knit a snuggly type one, but can't imagine how uber-crazy that would look.:D