Master Bedroom, originally uploaded by WHUhnnnnnnnn
Our house is consistently tidy and clean for showings.  There's a place for everything (even if that place is a temporary junk drawer), and everything is in its place.  Flowers are blooming, every surface sparkles, and it's amazing how much better our neighborhood looks through clean windows.
I used to come home at night and all my activities were some form of procrastination to avoid cleaning.  Recently I feel relaxed and free to do things I actually want to do.  Instead of playing video games I'm reading books or gardening. Instead of watching TV I'm fixing and making things.  I can actually inhabit my house instead of escaping from it.
Importantly, I'm developing the habit of maintaining the "showing ready" condition.  Getting the house clean reminds me how much I like it that way, and inspires me to keep it looking good.  And it works because I'm doing it for myself.