I do it compulsively. I rehearse conversations, trying to predict reactions to different ways I can say something (or whether it would be better to give an untrue response or just shut up) and try to script my own lines based on what is going to A) Solve the problem or B) Be least likely to result in conflict.
Most of the time, unfortunately, it's about avoiding conflict and avoiding hurt feelings. That's probably why most of my interpersonal issues continue until I get frustrated enough to discard the relationship (even though I have a reputation for being a really super nice person) and why none of my frustrations or emotional issues ever get resolved. I always end up agreeing with whatever people say I think, should think, feel, should feel, need to do (not always right off the bat, but always after getting in an argument or being threatened). I try again to comply, fail, feel guilty, never get any better.
I also tend, more than half the time, to script off-the-cuff responses on the basis of being in compliance with the views of the person I'm talking to or the most restrictive social norm I'm familiar with.
It hides autism really well. Excellent for passing.
Not so good for connection, or happiness, or psychosocial well-being.
Entertainingly, though, I can be myself on the Internet. There are so many as*holes online that it seems like it's OK to just type. I used to be able to do it on paper, too, but not anymore.
Which is why I have a very active e-life.
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"Alas, our dried voices when we whisper together are quiet and meaningless, as wind in dry grass, or rats' feet over broken glass in our dry cellar." --TS Eliot, "The Hollow Men"