I found myself at several gatherings over the holidays discussing university bound teenagers. There seems to be this idea that university students should focused on finding their passion.
Find their passion? Most teenagers cannot find their pants. How can we think that they will find their passion somewhere between the pub, the classroom and the dorm?
I think expecting to find your passion before you can legally drink is pretty unrealistic. As parents, we are setting up a pretty big failure platform if we set those expectations before they even leave high school.
There are exceptions: gifted athletes, artists and musicians have their talents identified early on so they are pretty advanced on the passion scale. People following in the family footsteps of law or accounting, have a prescribed path too. (Sometimes in spite of their passion)
University and first jobs are more about finding what you don’t like. Learning about the kind of professors/bosses that you don’t get along with. Working with group members who don’t pull their weight. Figuring how to identify the room mate who parties too much; that sort of thing.
The world is really, really big. You have to get out there and explore it beyond just university. Don’t be surprised if your passion does not start to reveal itself until you are well into your 30s or even later.
In the end, it’s not about when you find it, it’s about recognizing when you are in the right place at the right time and really enjoying yourself. That‘s what we are all shooting for.
Recruiter's Couch 
Great entry. I heard comedian Demetri Martin talking about how all he ever wanted to be was a lawyer. That was The Plan. Then he studied law and found himself dreading going to school. Lucky for us, he had a comedy club right across the street from the university…Passions can find us while we are busy looking for something else.