One of the main characteristics of this disorder is the instability, in such a way that you have instability in the self-image, one day they think of themselves as great others as zero; they have instability in relationships, shift of moods, and they also tend to be impulsive. People with this disorder seem to have their emotions always in conflict with the world around, and turn out to be sometimes aggressive towards others and also to themselves. And one of the main characteristics is a deep feeling of emptiness. Many times they can engage in self destructive activities, as unprotected sex, drug and alcohol abuse and driving unsafely. One other aspect is their probability of hurting, cutting themselves, an aggressive way that is explained as a way to deal with that emptiness, and their identity issues.