Good for you. I, too, find clutter frustrating, and avoid my sewing room when it's too messy and overwhelming. (I was the same way for 10+ years with my stamp room, too)
I often feel fidgety when things are out of control, and I get great satisfaction from filling a bag or box with things to go to GoodWill.
Sometimes, when I want to sew, I have to plan to spend about 2 hours cleaning up first. I'm a scrappy quilter, so when i'm making a quilt, it's not just a neat pile of fabrics that came home from the LQS in a tidy little bag... It's bin after bin of scraps, and lots of piles of FQs and half yard cuts that don't always get put away when I'm interrupted in the middle by DH and DDs.
I've been quilting just over 5 years and really need to go through and purge those clearance fabrics I purchased at JAF that I had no plan or business buying. Really, What was I thinking?