Here are some things that helped me with housekeeping:
1. Do it now -- It's not always possible with little ones, but it makes such a huge difference. Do your best to do it as soon as possible. In our house, if something sits for 24 hours (and it still often does), it could easily be there for the next month or lots longer
2. Night-time routine -- Get the house to as good or better than it was when you woke up. You may not be as baseline yet, but if it doens't continue to get worse, you can still manage it.
I also have a weekly chore list with about one rotating chore a day, meal planning, etc. It helps me a lot to keep on track. When I get too far off it, things fall apart and I feel like I don't know where to start. I schedule "special time" with my kids on here. It doesn't have to be lot or doing something special. You could also use this to organize a routine. It doesn't have to be time-specific, just an order for the day.
Scheduling things for the morning helps us.
I usually don't get to the computer till they're in bed for the evening. It just works better that way.
My big eye-opener was last thanksgiving when we spent a weekend at SIL's house who has no kids. I had been really struggling with a messy house that I didn't have time to clean and being exhausted because my kids weren't sleeping. I really believe in SAH, but was definately struggling with it. I realized:
1. Kids really are that much work. I have a spirited 4yo and a 20 mo, so it'd been awhile since I've really seen what life looks like without kids. Taking care of kids IS a full time job. End of story.
2. I attempt to do a lot. It's normal to me, but really SIL and lots of the mainstream don't CD, EC, make their own yogurt, cook from scratch, AP, compost, fruit and veggie garden.... I believe in this stuff and don't want to give it up, but it somehow helped to know that I really am doing/trying to do a lot.