> The key to occupational happiness is to first figure out what you’re passionate about and then find a job that matches this passion.

I think alot of people can misunderstand the "what" of their passion, especially when trying to match it with a job. Take for example photography. If you tell yourself you're passionate about photography but not understand what kind of photography and in what context/social situation you can make some pretty bad occupational choices. So if what you really are passionate about is street photography, socializing with random people, observing people in an urban environment, and you end up with working with photography in an indoor studio setting doing meaningless marketing campaigns you are probably going to end up unhappy. Maybe even loosing the passion of street photography as well...