My work is part of a tradition in psychology that shows the power of people’s beliefs. These may be beliefs we’re aware of or unaware of, but they strongly affect what we want and whether we succeed in getting it. This tradition also shows how changing people’s beliefs - even the simplest beliefs - can have profound effects.

Instead, as you begin to understand the fixed and growth mindsets, you will see exactly how one thing leads to another - how a belief that your qualities are carved in stone leads to a host of thoughts and actions, and how a belief that your qualities can be cultivated leads to a host of different thoughts and actions, taking you down an entirely different road.

The growth mindset also doesn’t mean everything that can be changed should be changed. We all need to accept some of our imperfections, especially the ones that don’t really harm our lives or the lives of others.

It is inspiring to realize that in choosing our response to circumstance, we powerfully affect our circumstance. When we change one part of the chemical formula, we change the nature of the results.

As I worked on this book, I puzzled where core values fit into the research findings. To be clear, there is no single unified set of core values across all the people in this study. That said, each person developed a set of values somewhere along the way, some more explicitly than others. These values might have come from family, or mentors, or teachers, or military service, or the ethics of their field, or the social milieu in which they lived, or their faith traditions, or reading and reflection, or personal experience, or some combination. I came to see that living to a set of core values is a choice, a personal responsibility of the highest order.