Seth Godin
contrasts his conjecture
"It's more important that you be passionate about what you do all day than it is to be passionate about the product that is being sold" with his statement "All that statement
"I've never met a great marketer who wasn't passionate about what she sold. In the case of marketing, it's not just a nice combination, it's a requirement". What do you think; can you be really great at a job that you are exceptionally skilled at but really don't care about the mission? A lot of really skilled people fail to accomplish great things because they just don't care about what they're working on - I'm guessing more often than not, lack of interest and passion in your product will overshadow your ability.