Motivation

I don't know about you, but the freezing temperatures have
given me a case of the winter blues, making me less motivated than I typically
would be on a sunny, warm day. How can we continue to be motivated and fight
those winter blues?

For me... the answer is TED talks. Dan Pink's TED Talk about motivation got me thinking, hence getting me motivated. What
keeps you motivated and how do you motivate your colleagues during these short
winter days?