This document discusses factors related to career development in the 21st century. It notes that career paths are increasingly non-linear and that career development can be facilitated through lateral or downward moves. It emphasizes taking responsibility for one's own career and investing in continual learning. Several aspects of career development are covered, including optimizing one's situation by understanding career anchors, engaging in career planning and using tactics to advance one's career, balancing work and non-work responsibilities, and engaging in personal development.