This is a great article. Many of our clients and their children have been dealing with this very challenge. Colleges and universities encouraging students to find or pursue their passion, only to find that its no where to be found; many times resulting in a delayed start in their career, multiple college degrees, and a financial burden borne by their parents.
I'm not saying it can't be done, but you have to do something and have experiences in order to have enough time to get a sense of what really interests you. My advice is to forget about passion for the moment focus on what you can contribute, experiment, and then stick with something long enough for the passion to develop. In fact, if you weren't one of the lucky ones that was able to find your passion when you were young, you'll have a chance to revisit that again at the end of your career. We are coaching our clients to embark on a similar journey as they near retirement, and helping them identify how to get the best return on their life. Fortunately, they are ready to face the challenge to "find their passion."