Here's what I do
Mindsets first - we're on a wheel that's turning down to the solstice, then it will start rolling up again to longer days in about six weeks. The world needs rest time just as we do, so it can wake up and get busy in spring.
I follow a woman on Insta who lives on Svalbard - they've just begun polar night and won't see sunrise for months. It's beautiful. See the beauty in winter skies, leafless tree shapes, winter flowering plants, evergreens. Look, the spring bulbs are already beginning to shoot green out of the earth! It's coming.
Enjoy winter dressing. Get the most beautiful coat you can, make it even more beautiful with scarves, brooches, sparkle.
Get outside in daylight as much as possible. This was super difficult when I worked 9-5, as it was dark when I left home, dark when I left work. Easier doing shift work.
Bring light in. Rethink your home lighting with lamps, fairy lights, candles.
Warm up your space - yes, I do like velvet and wooly throws and winter cushions and all the hot choc and comfort food cliches! Bring in the evergreens - it looks stunning indoors, much nicer than tinselly Christmas tat. Holly, ivy, fir. Tapping into ancient traditions.
Eat seasonally and BE in the winter. Plan and do the fun things. London to see the lights and the shop windows. Carol concerts, panto. Learn to ice skate.
Be active at home - declutter, deep clean, decorate, dig, tidy and plant for spring. Tiring yourself out and feeling pleased with anything you achieve will help you sleep better.