Mercifully I don’t get it any more because my life does give me the chance to get outside enough. If you’re chained to a desk all day, you might want to try light therapy.
I used an Apollo Golite (now owned and made by Phillips under the same Golite name). There’s probably cheaper options that work just as well. I wouldn’t know personally, I was young and my parents were indulgent. Anything to get me out of bed and off to school in midwinter. No, cold flannels don’t work.
If you’re not getting enough sunlight, it wouldn’t hurt to supplement with vitamin D. By itself or in a multi, it’s all good.
Don’t hide in the dark. Be well.