I find this every winter. The lack of daylight really gets to me. It wouldn't be so bad if we had some sunshine, but yesterday I went out at lunchtime and needed my car headlights on it was still so dark and dull. This morning and yesterday morning it took all the strength I could muster to get myself out of bed despite having had a good, solid seven hours of sleep. It's dark and I just want to curl up and go back to sleep, even now I feel so sleepy, and it's going to get worse up on the run up to Christmas.
In the summer I can be up like a lark, bright and early and have loads of energy. Maybe I'm not meant for life in the Northern Hemisphere? Lol.