though i am an associate member of the natural perfumer's guild, this post is not part of their wonderful "joy in january" event. *see link* i'm sorry to see the stats on how many suffer from s.a.d. during the winter months. perhaps i can offer some suggestions, since the "gloom" doesn't bother me.---(now a prolonged summer heatwave---that's another story!!!! you don't want to know! ha ha!)
anyway, i've found that lavender essential oil is very helpful. it does seem to balance moods---relaxing when needed & uplifting during "down times". if you're not a fan of lavender, try mixing with something you do love.
also, use the inactivity experienced during s.a.d., as an opportunity to "brainstorm"! think, think, think. that's using time wisely---plan out the coming week; month; year. get a pencil & paper. write down the happy things you want to do. make a chart. pencil in the practical things. even though you are not moving around, you are getting something accomplished!
hope my suggestions were helpful to someone. i do have a "giveaway" of my winter's spell incense. just leave a comment with your name, & i will choose the winner on jan 31st. if you are the winner you will have to email me your mailing address for your prize!