A lot of the time we are working directly with people. Here are some articles that could help deal with specific situations.

• Managing a Person with Victim Mentality. Key idea here is that you are not a psychologist, so focus on standards, outcomes, and try to set things up so that the victim has the chance to see something else.
• How to Manage Passive-Aggressive People. Part of the idea is not to be passive-aggressive yourself and to deal with the issue directly.