This time of year, and especially considering the winter we're having, it's essential to keep your bike life fun. Don't beat yourself up. If you don't feel like riding, don't sweat it. A little time off will whet your appetite for next spring.
On the other hand, if you're so inclined, there's fun to be had. Don't let the winter bike heroes drag you down with how you need to get all crazy serious. Remember your first bike ride? Remember how much fun you used to have in the snow? Summon your inner kid and go play!