For me, it's a matter of staying more active this winter.

This past winter, my riding completely stopped for January, and I only had a couple rides per month on either side. I didn't make up the difference with any running or gym work, so I gained a bunch of weight and SAD kicked in hardcore. Things started to pick up again in April, but I don't feel like my fitness ever got back to that of previous years. One other side effect of riding less, especially over the winter, is that my biking confidence suffered, especially on hills. I want to -- no, NEED to -- fix that.