Is it possible to be at your best even when you are underqualified or doing something for the first time? Is it still possible, even after decades of experience, to recapture the enthusiasm, curiosity, and fearlessness of youth to take on new challenges? With the right mindset--with Rookie Smarts--you can.

In a rapidly changing world, experience can be a curse. Careers stall, innovation stops, and strategies grow stale. Being new, naive, and even clueless can be an asset. For today's knowledge workers, constant learning is more valuable than mastery.

In this essential guide, leadership expert Liz Wiseman explains how to reclaim and cultivate the curious, flexible, youthful mindset called Rookie Smarts. Wiseman reveals the different modes of the rookie mindset that lead to success:

• Backpacker: Unencumbered, rookies are more open to new possibilities, ready to explore new terrain, and don't get stuck in yesterday's best practices.
• Hunter-Gatherer: Rookies seek out experts and return with ideas and resources to address the challenges they face.
• Firewalker: Lacking situational confidence, rookies take small, calculated steps, moving fast and seeking feedback to stay on track.
• Pioneer: Keeping things simple and focusing on meeting core needs, rookies improvise and work tirelessly while pushing boundaries.

Rookie Smarts addresses the questions every experienced professional faces: Will my knowledge and skills become obsolete and irrelevant? Will a young, inexperienced newcomer upend my company or me? How can I keep up? The answer is to stay fresh, keep learning, and know when to think like a rookie.