If the personal growth industry had a motto, it would be "Follow your passion" or "Do what you love and the money will follow."
Sure, if your passion is a rare one, like entomology, or even a moderately common one like accounting, money may follow. But if you are like the many people whose passion is shared by half the continent -- for example, activist or performer -- you're in trouble. Millions of people are competing passionately with you for the small number of decent-paying jobs. That's the reason the word "starving" so often precedes "artist."
I agree with this, and even his concluding statement...
Perhaps the best career advice I can give you is to paraphrase singer Stephen Stills: If you can't do the work you love, love the work you do.
...but I think he is missing other important conclusions:
-- Above all, let your passion be creating value, not creating widgets.
-- Choose to pursue a passion -- or a combination of passions -- that produces considerable value and requires uncommon skills.
-- It's the journey, dude, not the destination.
-- Action precedes motivation. (™ Colin Marshall)
-- Balance dogged persistence with realism and modesty.
-- For some people, "starving" might be worth it.