The beauty of my working in HR field is that it made me somehow wiser (although I keep my wisdom undercover 😉
For me people are nor good nor bad; people are just people. I admit that sometimes it’s a real challenge to discover some qualities (any quality would be fine) when dealing with a difficult person.
Before dealing with such people, for safety reasons not to lose your mind, you should do a backup copy. Case you go insane, you can always come back to that state of mind you call “normal”.