I also buy fabric with the rule, if I don't buy it NOW it may be all gone...but I have made an adjustment, if I find coordinating fabrics that I buy several of, I store them together in a gallon zip lock. I used to merge them in with my others and still do some but the ones that go together I try to use this method. I have "lost" so many in the past because I couldn't find their friends mixed in my stash. Remember quilting has no rules - it is for pleasure and improvement of your skills.