Work-Life balance?

This work-life balance is a myth.
Actually, I think it is downright harmful. 
It is a subtle yet dangerous trap because It gives the impression that you must balance everything else that we call life with work. It puts an undue burden on the individual as he/she tries to achieve this un-achievable goal.
In my humble opinion, everyone has a reward system and everyone must understand their reward system.
Your reward might be through work, promotion, raise....etc. 
Your reward might be recognition or fame; It might be a particular individual or a divine entity. It might shift from time to time and place to place. The key is to understand your own reward system, with its pros and cons, and use it to your advantage. Reflect on what it is that makes you happy. What it is that you do without prompting, without being asked, without hesitation. Focus on that and work everything else around it. 
That's how you achieve comfort in the imbalance that exists in each of our lives. That's how you can maintain yourself and maintain your sanity. 
Of course, that is just my opinion