Single-track careers are a thing of the past. In the modern job economy, we want our work to be an expression of who we are and our purpose in the world. And since we contain multitudes, there is no single job that will allow us to fully express ourselves.

In today's career landscape, this is the safer path—rather than putting all of your eggs in one basket (a single role or industry), you're highly adaptable with a variety of skills to draw upon professionally...