Maybe you could get those inexpensive laundry baskets that I picked up at walmart....that way the cloths aren't laying all over the floor to start with....just the sense of organization adds to a peaceful feeling.
Keeping in mind the good that you are doing & how important you are to this new foster care child & being thankful for that is also important toward feeling a peace in the situation you are in.
Placing it all in God's hands is the right place to start.....will be praying that you will be able to hand your concerns over to God so that you can feel the peace that only God can provide.