You may be familiar with the Robert Louis Stevenson story of Dr. Jekyll and Mr. Hyde. Dr. Jekyll believed that he found a method of separating the good and evil that he believed resides in all of us. The consequences of his experimentations did not bode well for him or the safety of others. A duality can also be used to described individuals who are perceived as being moody, or someone who does not demonstrate a well-balanced sense of emotional intelligence. This is a person who seems to have an on/off switch that can be triggered or activated, with or without warning. Those individuals are challenging to work with and when it is your manager whose personality or demeanor seems to constantly change – that poses even greater challenges as that person is responsible for your work assignments, performance evaluation, and reputation with your employer. When you find you are in this situation, there are coping strategies you can implement to help how you respond to and work with this manager.