You need to learn to delegate. With six kids you shouldn't be doing any cleaning or laundry, and should be splitting the cooking duties. You shouldn't be doing any dishes.
Depending on the age of your children, you should farm off as many errands as possible.
I have nine children, aged 14 to 1 year with one Aspergers and one probably autistic (working through the process of finding a specialist to look at him).
If you delegate properly, the household runs itself for the most part.
Thanks for the remarks. As a matter of fact, I do delegate. My older girls basically do the dishes and alternate the job. I do need to superivse and help with the cruddier jobs. Everyone pitches in with laundry folding. My son does the garbage hauling and burning. I have started getting them more involved in the bathrooms. My son sweeps the kitchen and the little ones are getting good as "pick-up" artists.
When they were younger I had to do it all. In recent years I have had somewhat less to do. I also have cut my standards back a bit. What I am going through emotionally with my divorce, etc., it taking enough energy out of me. I am trying to be easy on myself.
Remember, you have a husband around, and perhaps family, and I do not.