I second the Peter Walsh books. I have just finished reading one and it makes a lot of sence. Some of the tips are really good.

I find if I make a to do list in my diary of day to day stuff that needs to be done and I cross them off it seems to motivate me to get the list finished.

And just try to make things a habit. The fly lady thing is good if you can handle all the emails I have put some of her practices into place like make your bed first thing when you get out of it, and cleaning the sink at night so you don't wake up to dishes the next day.