Winter blues can be substituted for utilities or the service uniform at most commands. Who wears a dress uniform daily?
Vitamin D pills
I’ve found for me it’s about getting out and enjoying it. Hiking with the dogs, skiing, snow shoeing, sledding, snowball fights and snowman building etc.
I found that viewing winter as a time when I’m stuck inside was super negative for me. Now I look forward to the things that winter brings and allows for.
The only tough part still is when it gets gray for long periods but I soak up the sun when it’s here.
Sauna especially if you can get out in the cold at the same time. The humid air and heat will warm your bones and then you will really appreciate the freezing cold air. Extra bonus is by doing the temperature extremes your body gets recalibrated so you feel less cold when bundled outside and in your house.
Other people have covered the basics but when I was young and broke and lived in a northern latitude, I would make ceviche with catfish. Catfish is surprisingly high in vitamin D and is always affordable. Ceviche is kind of a “tropical” dish so it made me feel better for non-vitamin reasons too.