Some people, like Katie of KatersAcres, are way WAY more organized than I am. She’s already set up a polymer clay weekly challenge project for 2015. I did a similar project years ago on my own blog (although it took me 15 months to finish it, sigh) and it did let me make neat stuff I may not have otherwise finished or tried. There is nothing like regularly doing something to really improve your skill set.
I may give this all another shot. Having a little accountability to friends can make the difference.