That message is such BULLSCHIT! Don't believe it.
The example he gave of him following his grandfather's passion does not make this true.
Perhaps most people do not follow their passion. Instead they accept someone else's beliefs, before they have had a chance to develop and trust their own. Or they believe someone's advice "Get into plastics!" and are possibly miserable their whole life, even though they might make a great living.
Bull!
Spend your time doing what you love to do.
