We do have a Fabric Moratorium thread in the Quilting Challenges section. This really helped me change my mindset and stop buying fabric just because I liked it. It's also very encouraging to hear the success stories of quilts made from stash, or UFOs and stash passed on to others.
As for patterns, I go through mine periodically, and pull the ones that no longer interest me or that I realize are beyond my capabilities. I'm very lucky to have a quilting friend who is willing to take anything -- fabric, tops and patterns -- that I'm ready to let go of, and pass it along to her various groups that quilt for charity. If you feel encumbered, I urge you to unencumber yourself. It feels good!