Making time off predictable--and required.

People in professional services believe a 24/7 work ethic is essential for getting ahead--and so they work 60-plus hours a week and stay tethered to their Black-Berrys. This perpetuates a vicious cycle: Responsiveness breeds the need for more responsiveness. When people are always "on," responsiveness becomes ingrained in the way they work, expected by clients and partners, and even institutionalized in performance metrics.