I think routines at home and school can make your life a lot easier. Unfortunately, I am not a very routiney person (was rubbish when I had babies), so I have to work hard at being disciplined with myself. However, it pays off.
At school, it helps to have weekly routines for when you give out homework, when you take it in to mark, and when you give it back. Then to have specific slots where you do planning for the week ahead, any photocopying or resource preparation, etc.
At home, if you can get domestic help, then do (we can't afford it, so everyone at home has to muck in). Online shopping is really helpful, but again, needs to be planned. I have recently bought Ocado membership, so get groceries delivered at least twice a week. I've been using their online menus to take away that 'what are we going eat tonight' groan.
As for the other nightmare - laundry and clothes. I find that the easiest thing to wear to school is suits. I have three or four, and tend to do two days of one, two days of another, and then a more dressed down Friday. It really makes it easy to get everything ready on a Sunday night, and you know you are going to look reasonably smart.
The other thing is don't beat yourself up when everything goes pear-shaped - you are doing your best, and this phase will pass. If you miss a set of marking one week, don't try to fit it in in your personal time. The world won't end. The school is better off with a happier and more energetic you than a set of perfect books and a downtrodden teacher.