The long nights of winter, which seem to start when the clocks "fall back" by one hour in October, take on a life of their own. When it's dark at 6, it feels like midnight and I am often nodding off at 7:30. Good times. Maybe it's more accurate to say it's a total lack of life.
One remedy for delaying sleep so early in the evening may be to drink coffee in the afternoon. The problem is, coffee at 1 pm often means I'm still wide awake at 1 am. And by wide awake I mean dead tired but still too keyed up to sleep.
Other remedies surely exist, but I don't know what they are just now. I'm too tired to think. It's 9:45 pm and I've been fighting sleep for two hours.
Fortunately, in late December, the days start to grow longer again, so it's only five or six or eight (long) weeks in the dark doldrums. My energy level returns with the daylight. Thank goodness. I'm afraid I'll get whiplash from the nodding off.