As soon as I realized what I was doing, the habit was almost entirely gone-- making it conscious was enough for me to see that it was pointless. I'm not going to say that I never do it anymore, but if I start, I realize it quickly, and drop it.
I've got some habits which are considerably more intractable. It doesn't help to realize that video games are fake achievement, nor that living in a mass of clutter makes my life harder.
So, any examples of fast habit change? Any thoughts about invoking fast change?