[AnimalMuppet]

First, look for more fundamental reasons why you're so tired. Are you sick? Are you depressed? (Though finding something you're passionate about may help with depression.)

Then, are you looking for something that you are already passionate about, but are unaware that you are? Or are you looking to discover something to become passionate about?

Either way, talk to people - people at work, neighbors, people at church or the bar or the gym or the park. What were you talking about when you suddenly realized that you'd been talking for 45 minutes? You're pretty interested in that. Or, what was the other person talking about for 45 minutes, and you weren't searching for some kind of graceful way to get out of the conversation? You're pretty interested in that, too.