I use the fly lady method, basically she tells you what to do today, this week, this month. There's another thread, but I'm useless at doing links, it's baby stepping and lists. We all post what we aim to do then update with what we've done.
If that seems like yet another job to do then pick the room which is most important to you and start there. Spend 15 mins picking up things that should be esle where. Have 3 bags/boxes- rubbish, recycling, other rooms. The rubbish must go straight in the bin, recycling straight in the car or whever you store it.
Move to another room, repeat process- remember only 15 mins in a room before you change.
www.flylafy.com
Has loads of tips for speeding up the process of cleaning, they also do Kid's Challange for the older DC, things like run around the house collecting all the books/toys/clothes you've left in your wake. Only 1 thing tho, so that they don't become as overwhelmed as you and give up?
I always start with my bedroom when the house looks like a tip, whatever else I get done or don't, my room is a relaxing refuge at the end of the day.