Winter Weather & Our Disposition

I've noticed that since we've had summer-like weather the last week that my spirits have been up. My energy and ambition have returned!
I'd been going through the blues: depression, anxiety and sluggishness- I was beginning to think that maybe there was something physically wrong with me, but now I think it was simply the winter blues.
As soon as the sunshine and warm weather hit, my attitude immediately changed!
I've heard that alcoholism and suicide are higher in nations like Iceland and Scandinavia where they have darker, harsher, longer winters.
I do like the winter too. But sometimes it's just too long.