How do they do it?

Okay does anyone out there know how to be a stay-at -home Mom and do everything that entails? I just don't see how to do it. I feel like my whole life revolves around cooking cleaning and laundry, and somehow nothing ever seems to be done. My house is always a wreck, even though i spend all day cleaning it. I am expected to feed the kids the animals my husband and whoever any of them decide to bring home with them. At the same time i am to make sure the laundry is done the dishes are washed the bills are paid the checkbook is balanced the toilets are sanitary the house is picked up the trash is out the dogs are taken care of the 2 year old isn't into anything the 7 year old and 9 year old haven't killed each other and on and on and on. I am not June Cleaver or Martha Stewart and I am sure as ____ not superwoman. So if anyone out there knows a way to get it all done PLEASE tell me, cuz I am lost.