How many times we deal with difficult people around us. As a friend, as a colleague or even a family member.
I know nothing is perfect and as far as I am alive there would be people who I don't like and get on my nerve.
The easiest case is that the difficult person you have to deal with is difficult for most of the people around you and the hardest case is that , the person is difficult to some and doesn't show steady pattern. For example the person is difficult today and act easy tomorrow. You know someone with unstable personality but clever enough to play his/her game.