Take a step back
There is always another perspective, always another way to look at things, always two sides to every story.
Force yourself to try to see the opposite point of view, even if it sounds ridiculous to you.
Whenever Warren, my husband, and I are driving and he starts to complain about the other drivers, I make a point to find some crazy, often silly, viewpoint which would explain why the other person was driving that way.
As much as it drives Warren crazy, it does get my point across, and sometimes calms the situation a bit.
Your difficult person still may be difficult, but taking the time to find another viewpoint is worth your time. Sometimes it defuses your tension and sometimes it provides a moment of clarity, but taking a step back is always a good idea.
Keep ON THE RIGHT TRACK to dealing with your difficult person this week.