If this is the new winter / spring weather pattern for the next few years we're going to require some therapies to cope with the lack of light such as the 'light rooms',
https://www.ncbi.nlm.nih.gov/pubmed/18053580 they have in Scandinavia and as sburnaby33 mentioned, far more colour in our architecture like many other northern latitude parts of the world.
Personally I'm finding it difficult to cope, even more-so with the anticipation of the 'end of it' and the start of spring which just doesn't seem to be happening. Almost every weekend has been terrible, I'm part of a hiking group and we've been cancelling everything, this time last year I'd already started climbing the Chief, going up Skyline Trail on Grouse and many others, today we cancelled a hike around Buntzen Lake.