I love Kim and Aggie!! I don't have their book, but they are terrific!
My advice is to take some time and go through your stuff - toss what you don't need. Make sure everything you keep has a place and that you DO actually use it, like it, and want it displayed.
Do one room at a time. Start small - the bathroom.
Go through the cabinets - toss what you don't need. Clean the tub and shower top to bottom. Toss the empty shampoo containers...
Do the toilet, the mirrors, and the sink.
Wash the floor.
Then - every time you take a shower, wipe down the shower, swish the toilet, and wipe the sink -- easy peasy. Bathroom clean in less than 5 minutes. Wash the floor in there when you need to - once a week if need be.
This will give you the start you need...
Do little bits at a time -- do the linen closet next...
Then choose another small manageable place.
Even if you only do the kitchen junk drawer, you're moving in the right direction...
It's much easier to clean a decluttered house - it's much faster.
I do laundry almost every day -- it keeps the pile manageable.
I keep my kitchen counters clutter free -- it's a pain in the neck to have to put things away immediately, but it makes it so much easier...
YMMV
LBC