“People who feel like their careers truly matter are more satisfied with their working lives, and they’re also more resistant to the strain of hard work. Staying up late to save your corporate litigation client a few extra million dollars can be draining, but staying up late to help cure an ancient disease can leave you more energized than when you started—perhaps even providing the extra enthusiasm needed to start a lab volleyball team or tour with a rock band.”

Cal Newport, So Good They Can’t Ignore You (Page 152)