The secret of life is to have a task, something you devote your entire life to, something you bring everything to, every minute of the day for your whole life. And the most important thing is—it must be something you cannot possibly do.
Is there a way to cultivate curiosity? To start with, you want to avoid situations that suppress it. How much does the work you're currently doing engage your curiosity? If the answer is "not much," maybe you should change something.