Work and Identity

Distinguishing between work and identity is not easy... if even possible. Of course, making no distinction at all is also problematic. Integration is different than enmeshment.
Those at the extremes get all the press. Working non-stop, convinced of one's indispensable significance, and completely unaware of the fragile house of cards being built to sustain one's sense of worth. At the other end of the spectrum are those who trudge off to the job they hate; loyally and/or begrudingly put in their time; all the while waiting until it's over each week so they can get back to living.
Where are the wide open spaces inbetween, where work is an expression of one's identity without being the keystone? Where are the people living their lives at work as much as they are at home or at play, and how are they finding their way? Talk to me.