My fabrics were kinda overwhelming me too. I am not really an organized person. My fabrics are organized by my pretty fabrics in one place. The fabrics that were mostly given to me or from yard sales that I call my ugly fabric. I have been trying to shop in my stash at least for the majority of the project. Sometimes I have a project in mind and find the fabric for it, sometimes I find fabric and make it into a project. Most of my ugly fabric ( just not me) ends up in donation quilts.
I piece all of my backs from my stash to use it up. Good luck. There are tons of patterns to make scrappy. I always thought I didn't like scrappy until I made one.