Hints for chasing away the cold, dark and gloom?

I keep meaning to post, but even though the huge crisis I dreaded is past, I'm still exhausted, and as a result I alternate between busy, exhausted and embarrasingly self-pitying at the moment. So I thought, rather than inflict this horrid state of mind on my poor friends-list, I should try and make something nice of it. 

So - any suggestions on how to keep winter gloom at bay, or to make winter gloom fun? Any hints on how to chase away exhaustion? Any cheering links to humorous things? Or pleasant but serious things? Warming recipes? Anything considered!