You know who your competitors are. You keep tabs on them regularly, and can list them calmly, along with their strengths and weaknesses. But your enemies are a whole other matter. They’re the haters and the doubters who said you’d never make it, the ones who stomped on your dreams. When you think about your enemies, you get emotional. You feel like you won’t let anything—or anyone—stop you.

Over the last decade, a single innovation has massively fueled digital black markets: cryptocurrency. Crime lords inhabiting lawless corners of the internet have operated more freely—whether in drug dealing, money laundering, or human trafficking—than their analog counterparts could have ever dreamed of. By transacting not in dollars or pounds but in currencies with anonymous ledgers, overseen by no government, beholden to no bankers, these black marketeers have sought to rob law enforcement of their chief method of cracking down on illicit finance: following the money.

In 2014, the world witnessed the start of a mysterious series of cyberattacks. Targeting American utility companies, NATO, and electric grids in Eastern Europe, the strikes grew ever more brazen. They culminated in the summer of 2017, when the malware known as NotPetya was unleashed, penetrating, disrupting, and paralyzing some of the world's largest businesses—from drug manufacturers to software developers to shipping companies. At the attack's epicenter in Ukraine, ATMs froze. The railway and postal systems shut down. Hospitals went dark.

In this perennial best seller, embraced by organizations and industries worldwide, globally preeminent management thinkers W. Chan Kim and Renee Mauborgne challenge everything you thought you knew about the requirements for strategic success. Recognized as one of the most iconic and impactful strategy books ever written, Blue Ocean Strategy, now updated with fresh content from the authors, argues that cutthroat competition results in nothing but a bloody red ocean of rivals fighting over a shrinking profit pool.

For the first time in history, we have instantaneous access to the world’s knowledge. There has never been a better time to learn, to contribute, and to improve ourselves. Yet, rather than feeling empowered, we are often left feeling overwhelmed by this constant influx of information. The very knowledge that was supposed to set us free has instead led to the paralyzing stress of believing we’ll never know or remember enough. Now, this eye-opening and accessible guide shows how you can easily create your own personal system for knowledge management, otherwise known as a Second Brain.