when you bought the fabrics, did you buy them in "sets" you thought would go together in one quilt? can you easily pull out two or three "colors" and at least one "background" that will all work together?
or are they mostly more random?
my mountain consists mostly of "colors" (good for the foreground pieces). not a lot of fabrics good for backgrounds. i also tend to forget the back of the quilt. so, when i shop my stash i have a hard time pulling out everything i need for one quilt.
if that's your problem, try modifying your resolution so that you only allow yourself to buy one or two new fabs to coordinate with those from your stash. don't buy anything, though, until you've settled on the pattern you want to use.