I don't think I can tell you about a person that I found it particularly difficult to work with. I've been blessed to not have to worry about that in a long time, but I can tell you the qualities that I find it difficult to work with in a person. If there's somebody who is very micromanaging, someone who is not even aggressive, because I can handle aggression very well, I can handle constructive criticism very well, so just being micromanaged is one of the things that I frown towards because I'm used to doing my job and doing it well and knowing that my boss trusts me to do my job and doing my job well.