I work in Training (for my day job) and much of my work is really at its heart about change management – identifying the need for change, laying the groundwork for change, planning for change, communicating about change, and training people to implement the change. This requires a holistic perspective. Seeing how people, projects, workflow, and resources influence and affect one another. Seeing things as part of a system.
It makes me think about how you need to view your career as part of a system, too.