Like others I don't like the heat on during the day, then don't feel as bad at leaving some doors open now and then.
We bought some hand warmers a few years ago, they have a piece of metal in gel and when you bend the metal it makes the pack go solid and warm, just pop them in hot water when the rayburn's fired up in the evening and they are ready for next day.
I find I'm coldest when I've been sat (at the computer) and when you move the cold from your hands and feet is pumped round your body and lowers your core temperature (search and rescue pal told me that), so it's always a hot coffee after I come off this thing. If I keep busy on something I'm not too bad, except damp weather and east wind, which hits the full front of the house with most windows. I have a fleece body warmer I wear too much, spoils me a bit,
I suppose if I'm cold the best thing to do is go and clean some beastie or other out, usually end up taking my jacket off.
I have some furry boot type slippers as well, makes a BIG difference if your feet are warm.