Living in Alaska....and in Fairbanks...which is only 120 miles from the Artic circle.....darkness is a daily battle from November to February......on the 21st of this month we get 3 hours and some change worth of light...not bright...but pretty dull.....so my depression works sinerestley against the dark......not being able to sleep.....Ive gone months with barely hours of sleep......lots happen when your sleep deprived......not good......am just saying that getting sleep....even way too much is much better than trying to get some shut eye.....hope you can balance out to get the right amount....not saying your are not suffering......best of luck...Artie