The Systems Theory Framework (STF) of career development represents a metatheoretical account of career development that is consistent with the constructivist worldview. Presented as a framework of influences, the STF clearly illustrates the content and process of career development. The STF has provided the stimulus for the development of a qualitative career assessment process, a guided reflection titled "My System of Career Influences" (MSCI) (McMahon, Patton, & Watson, 2003a). Using the content subsystems as aspects in a process of guided reflection, clients engage in the construction of their own career stories by reflecting on their system of career influences. A series of questions guide reflection on the meaning of these influences. The MSCI reflection activity may be completed individually, in groups, or with the assistance of a career counsellor or career teacher. The development and trialling of the MSCI will be outlined in this paper.