Perseverance is necessary to effect change over the long haul. For many with BPD, having a consistent unflappable figure in their lives, whether it be a neighbor, a friend, or a therapist, may be one of the most important requirements for healing. Such a figure may contribute little except for consistency and acceptance (in the face of frequent provocations), yet furnish the borderline loved one with a model of constancy in her otherwise chaotic world.