A while ago, it occurred to me that I was spending a lot of time inventing offensive things. I'd imagine someone saying something obnoxious, and then invent responses. Sorry, no examples come to mind, and I'm not going to invoke the habit long enough to come up with one.
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?