Any business that involves interaction with the public requires a certain amount of patience and understanding. In the real estate business, you come across people from all walks of life, so you need to be prepared to deal with clients who are demanding and fickle. While most clients are friendly and great to work with, there are those that can make the days drag on.
This flexibility includes clients being willing to take less for their house than they'd like due to economic conditions and being willing to stage or have their house staged professionally. If this kind of client isn't willing to back down, especially when home values have fallen, they might not be worth holding on to.