How Can We Maintain Wonder?

The older you get and the more experiences you have, the easier it is to become jaded. However, a sense of wonder at the marvels of the world help to motivate us, and drive us to learn and appreciate life more.

So how to resist that creeping sense of boredom or frustration? How can we maintain wonder?

Related questions: What are the pros and cons of experience? What can be learned from children? How do we learn?