Dear Ms. Smith,
I notice that you’ve run up against the unfortunate side of the Golden Rule–“Do unto others as you would have done unto you.”–in that people have begun to treat you how you treat others. I’d like to say that I’m sorry about that, but I’m not.
I’m sorry that you don’t see that that’s what’s going on–that you have, by your behavior, established a standard for what appropriate behavior around you and towards you is and that, if you find that people are treating you in an unpleasant way, it may be because of how you run around the world treating people in an unpleasant manner.
As your famous letter writer says, “Whatsoever a man soweth, that shall he also reap.”