In this guide, we’ll explain what dopamine is and how it affects us. We’ll also discuss how some other chemicals in your brain work with—and against—dopamine, and why finding the right balance in your brain chemistry is the key to happiness.

Our commentary adds background information about the biology and chemistry of your brain. We also clarify how dopamine interacts with other chemicals, and even the structure of your brain itself, to produce the behaviors that the authors discuss.

Our commentary will provide some background information about the entertainment industry and the people Streisand discusses. We’ll also examine some of the psychology behind Streisand’s drive to perform and escape from reality. Finally, we’ll discuss what other prominent figures—such as composer Paul Wiliams—have said about Streisand and her work.

This guide is broken into two parts. In Part 1, we’ll examine what mental toughness is and some of its key benefits. In Part 2 we’ll discuss how to cultivate mental toughness. We’ll also contextualize, compare, and contrast Zahariades’s work with that of mindfulness, mental health, and other experts.

Throughout this guide, we’ll discuss topics such as how to start your business, how to negotiate cultural differences as an international entrepreneur, and how to manage mental health struggles as a business owner. We’ll also use examples from Fox’s time with Shoes of Prey to illustrate her points. In our commentary, we’ll discuss strategies for developing a business idea, offer advice for identifying and navigating cultural differences in business, and explore additional tips for taking care of your mental health.

In Can’t Hurt Me, former Navy SEAL David Goggins describes his transformation from someone who let his circumstances control him to someone who proactively seeks greatness by tackling new challenges. He thinks everyone can work to cultivate a drive for self-improvement in order to overcome obstacles and reach their goals.

Most of us only give 40 percent of our effort, leaving 60 percent on the table and falling short of our potential. Goggins offers 10 actionables to help people push themselves to address obstacles and work efficiently toward their goals. You’ll learn to:

• Face the difficult circumstances that have shaped you
• Hold yourself accountable to your goals
• Get used to discomfort
• Visualize success
• Draw motivation from your opponents and past victories
• Compartmentalize your time

In this guide, we explore Dweck’s mindset theory, most notably the nature vs. nurture debate. We connect her ideas with other self-help books to further explore the damage a fixed mindset causes and the benefits of a growth mindset. Finally, we link to practical tools and techniques to help you learn how to overcome a fixed mindset and embrace taking chances and making mistakes.

In Think Like a Rocket Scientist, Ozan Varol describes nine strategies to help you dream bigger, make smarter decisions, take informed risks, and cultivate personal and professional success. Varol is a former rocket scientist who worked on the Mars Exploration Rovers before becoming a lawyer, professor, and public speaker. This guide explores Varol’s nine principles, compares them to those of behavioral experts like Daniel Kahneman and Philip Tetlock, and includes strategies for putting them into practice. Along the way, you’ll learn:

• How to solve problems like billionaire entrepreneur Elon Musk
• Why you should treat your ideas like scientific hypotheses
• How to bounce back from failure and avoid complacency after success

In Antifragile, Nassim Nicholas Taleb explores how we can leverage antifragility to make the world’s uncertainty work in our favor. He provides examples of both fragile and antifragile systems ranging from the historical to the modern, and in areas ranging from politics and economics to the human body. The verdict is clear: Antifragility is necessary if we are to thrive.

Waitzkin builds from basic to advanced strategies for both the psychological and technical sides of skill-building, showing that your growth as a competitor parallels your growth as an individual. In our guide, we’ll explain how to build any skill from the bottom up, from mastering the basic elements to developing high-level competitive tactics. We’ll also clarify and expand Waitzkin’s ideas with other perspectives on learning, from The Talent Code by Daniel Coyle, Black Box Thinking by Matthew Syed, and others.

Though it takes time and tenacity to excel, Waitzkin’s lessons will improve your approach to learning and help you find fulfillment in mastery.

Syed explains how an organization’s culture and systems either promote or prevent learning, and he lays out several steps for learning from failure in our complex world. Any organization can change its culture and systems by embracing failure as a powerful source of learning. We’ve rounded out Syed’s ideas with advice from Tribal Leadership and The Fifth Discipline, which discuss the cultures and systems of effective businesses.