I disagree. People are born passionate, and passion certainly contributes mightily to success, though I wouldn't say it causes it outright.

But passion can be kindled -- on this I agree, though I think it takes some soul-searching; just trying things is unlikely to work, though you could get lucky.

People are born curious, or interested, or aware. You might consider that a passion for learning or exploring, which I certainly think you could argue is stronger in some people than in others. But, nobody is born passionate about a career or profession or job. (And yes, passion contributes mightily to success. But it doesn't precede success, which was the point of the post.)

Having seen a lot of people try to find their passion, it's become pretty clear to me that it takes action. You can sit in a room for as long as you want, searching the depths of your soul, meditating, whatever you want to call it, but without actually going out and trying things, you're never going to find something you're passionate about.