I'm all in on this one!
Last year I finally sorted all my bits and pieces, collected over the last 40 years, by color family and stashed then in Sterlite tubs. That was my first step toward not buying any new fabric until I get a good chunk of my current stash turned into quilted things.
It's so hard to resist the new fabrics when they come out, though! Being accountable here will hopefully help with that.