While reference to the `whole person’ is common in diverse therapeutic modalities, clients who experience the impacts of complex trauma often do not experience themselves in this way. This means that effective therapy for complex trauma needs to adapt accordingly. In fact the notion of a unified self has been critiqued for some time (`It is the nature of the human mind to be subdivided…multiplicity is inherent in the nature of the mind’, Schwartz, 1995; `[t]hough the self is a unit, it is not unitary’; LeDoux, 2002). From this perspective, it is `how well we can keep it together, how harmoniously we can bridge, coordinate and even integrate the different parts of ourselves that determines how functional we are’ (Putnam, 2016). This session addresses the development and process of self, how healthy developmental trajectories are disrupted by early life trauma, and the differences between `normal multiplicity’ and dissociated self-states which are trauma-generated.