Three concepts from sociology--dichotomy and two extensions, dialectic and dialogic--are considered here as social-psychological tools for career practitioners who analyse and investigate career patterns, career motivations and career pathways, whether at career start or at further points of transition. These terms have macro-social applications not discussed here, but the present focus on individual career agency and capacity shows how these concepts can illuminate drivers for change or stability in individual life course and career development. Applying these terms to how career theory accounts for the positive interaction of individuals within the networks of their lives adds additional insight into why and how individuals change--or do not change--careers, and what constrains or enables their personal and occupational paths in the contemporary employment environment.