If you even have the faintest notion that you suffer from S.A.D., it has severe effect on many people here.
You are not alone. I seem to be quite durable but have many friends who suffer extreme winter depression.
I live a 53N so any of you can easily imagine my day/night timings. Sunset here on the solstice is 1:52 PM, I need say no more.
The most remarkable drug-free cure is extremely bright light in your house. Noon at the equator.
That "fixes" SAD people and corrects a poor circadian rhythym (who's to say we are all the same, huh?).
The lights are ON before they get up and do not go OFF until after bed time.
I've been in a couple of SAD light-equipped houses. Holy-toot but is it ever BRIGHT!
Good friend of 20 years is just about to buy and install SAD lights to correct her sleep pattern.
I hope it works.
I might be SAD sensitive. I ran many strings of those popular little Christmas lights all around the edges of the ceilings
in several rooms. I got up in dawn's warm early sunrise light. I liked that.
Even now that I'm retired, I have lights on timers all over the house so I don't stumble around in the fekking winter pre dawn dark.
Down the hall, through the kitchen and dining room, down the stairwell and into the lower kitchen.