Quote from Marissa Mayer, Google’s Vice President of Location and Local Services on Callie Schweitzer’s blog on Huffington Post …
“…she believes there’s no such thing as burnout — you can work really hard for the rest of your life as long as you know what matters most to you and make sure you get that.
What causes burnout, she said, is the build up of resentment at having to give up what really matters. Is it dinner with friends on Tuesday nights? A movie with your husband on the weekends?
Whatever it is, make sure you get it because otherwise you’ll spend the rest of the week resenting what you didn’t get to have — what work deprived you of, and you’ll be less productive.
Life's Best Advice 
..I think we can also apply this to our personal relationships as well…..