A difficult person has had you tearing your hair out in the past, but you are slowly learning how to handle them. The key is to feed their ego without letting them detect that you know how little confidence they have in themselves. You hold the upper hand in this situation, so take control. You won't have to work too hard to put them at ease around you. Believe it or not, it's the fact that they are so intimidated by you that is causing them to act so disagreeably.