First, relax. Your passion for your life's work is unlikely to come as a moment of inspiration.
Here's what the researchers who've studied top achievers advise.
Experiment. Try new projects and new roles at work. See what seems interesting. If there's nothing, finish the project and leave the new role after a reasonable time.
Found something that seems interesting or satisfying? Explore. What can you learn about that activity or role?
Think about the contribution you are making to others. Are you helping the team? Are you helping people who really need your service? Are you helping humanity?
Activities that help others are a source of eudaimonia. (It's Greek.) You might think of eudaimonia as the satisfaction of a life well-lived - not just a life of hedonistic indulgence, but a life that allows you to look back and say 'I made a difference'.
Still think you are on the right track? It's time to develop your interest into expertise. Develop your grit - your passion and perserverance for that activity. Over time you will find that you soak up relevant information and spend more and more time on that activity.
Researchers like to compare finding our passion at work with finding a life partner. It's not realistic to hold out for the perfect match, hoping that the one-and-only will come along.
Don't miss out on your life's passion just because it didn't come to you easily.
We're indebted to many researchers and thousands of salespeople for this one. It's been extensively field-tested.
It can be used in dodgy, manipulative ways, but you can use it honourably. The ethics depend on the context, so I'll have to leave the ethical issues to you to mull over.
It's the consistency principle, known to salespeople as the 'foot-in-the door technique'.
Here's how it works.