I actually like your advice. It's a good one ;))

you're not in the diplomatic corps, you don't owe anyone humble courtesy.

I am very much in a similar coprs... Worse, even. Of course metaphorically. I don't even work but very much part of 'organization' teemed with dim-wits. Diplomatic, pathetic, idiot-tatic. Lol. Ok, I have run out of vocabulary. But you get what I am trying to say.

thoughtless

Yes, you have nailed it perfectly.

I just don't let almost anything extrinsic get to me...

Erm... It does affect but not for too long :)
Best!!!