TED Talk: How to make work-life balance work (Nigel Marsh)

I was quite impressed and inspired by this Ted-talk about the importance and possibility of work-life balance. I recall Google Founders, Sergey and Larry, bring up the same concept that a better life means not having to work the traditional hours that we currently do. I agree with Nigel that companies are inherently not in a position to help you come up with a work-life balance. You need to take charge and prioritize your own lives. How do you measure success?