I didn't read the whole thread but I get the picture and understand where you're at. Here is my two cents on the deal.I have four different craft that I do regularly. I couldn't not do them if they were not organized. At times one of the crafts get into a mess and I have to consider the other people who live here and out of consideration for them (clue to myself and you)I need to afford them the same happiness that I get out of my crafts and that is not to mess up the whole house. So sometimes I take the whole day to put everythink back before starting a new project.
So, stop buying, stop sewing. Box all the fabric and notions up in containers untill everything is gone. Now hire someone to build you shelving from the floor to the cealing (if you have tons of fabric). Get one small chest of drawers and that will be for your notions, one pegboard for you rulers.
Now think of all the fun you will have putting the fabric on the shelves. You will find stuff you never imagined you had. Group them in color groupings. You will be so happy afterwards to be able to see everything and the rest of your family will be happy too.
This will take maybe weeks but the end result will well worth it all. There is no other way around it. You must do it.
A good thing is never put anything on the floor, put it in it's place.