No offense, but this approach suggests that the problem lies with the victim, who has to "learn to deal with" the difficult person, and not on the difficult person itself. I shouldn't be acclimatizing to the difficult person, it's they who should be conforming to civilized codes of conduct and should learn to treat people with respect.

Or may be I'm being hasty and judging a book by its cover (which in this case is your summarization of it) here, I'm not so sure.