The world is full of difficult personalities, but the one that is impossible to avoid is the narcissist. They are usually the most insecure people in a room, but have found a way to look ultra-confident.

Dr. Ramani Durvasula is a psychologist specializing in the study of narcissism. She discovered that, in most cases, highly narcissistic people are masters of manipulation. Their main goal in a relationship is to compensate for their insecurities by controlling and manipulating others. Here are six phrases they always use – and how to deal with them: