Need to learn how to better manage my own rhythms

I've been trying for the last month to write something new, and it's been going terribly. Note, I don't have anything new in mind. I've been trying to come up with an idea and then write it. Everything, though, has been distinctly unsatisfactory. I attribute this, in part, to winter doldrums. Simply put: I'm usually less happy in the winter, and it ofte…