When it comes to creative arts, of which jewelry is certainly one, there seems to be a natural ebb and flow of creativity, and forcing creation for the sake of getting it done when not in the natural flow can be disastrous, or at least very frustrating.  For me, I find that my creativity peaks in the spring when the tide of life itself begins surging forward again in a rush of newness.  In the winter, when I have more time to create, my mind is in hibernation mode and I find it hard to come up with new designs.