I'm just chiming in to say that I have the same issues. Last weekend I decided to pull my sewing room apart because I thought (that is the operative word - thought) I had come up with a better arrangement for my shelves. Needless to say, the room is still an absolute mess because I work during the day, and I haven't had any time to get back in there and put anything away. I keep telling myself to leave well enough alone and ignore all these "organizing ideas" that pop into my head, but do I? Nooooo!
My biggest problem is not fabric though - it's magazines and books. I love both, but at times I just want to sell them all and start over again. They take up so much space and I find myself going online all the time to look things up. Sigh......