SAD in a nutshell...
Get More Vitamin D
Light therapy is generally useful for people who don't get enough vitamin D. You can get light therapy by using special, very-bright (3,000-10,000 lux) lamp. . The light can also ease the symptoms of depression.
Light therapy isn't foolproof. It works better for some than others.. So, before you go buy one, make sure
you do some research or talk to a doctor about how they work.
Find Workouts You Enjoy
Keep Regular Sleep Hours
Because winter days are short, you don't want to waste them by sleeping.