Gaslighting is a series of manipulative behaviors designed to make you question your reality. But what is gaslighting, and how do you know if you are in a relationship with a gaslighter? Stephanie Moulton Sarkis PhD, author of "Gaslighting: Recognize Manipulative and Emotionally Abusive People - and Break Free" lets you know characteristics of gaslighters, and the most effective way to handle being in a relationship with one. (Hint: Get out!)