Watson, I can totally relate! Luckily I have a daughter that has a great eye for color coordination. My last quilt I ended up buying so much fabric that even when I got the right pieces picked out I had my DD help me with the layout. Sometimes it is just a matter of placing the different fabrics together. Sometimes I think a lot of my stash is because I change my mind after buying fabric.
I envy people that can put together all the fabrics in the bargello quilts.