Keystone habits are specific, daily actions that serve as the foundational layer of a productive life. They are carefully selected, tractable habits that you return to every single day to fundamentally change your self-identity from someone who only does what is easy, to someone who can do hard things that are important. Cal Newport breaks these down into three crucial categories to focus on for maximum impact:
- Body: A fitness or health habit to ensure physical health. This could involve exercise, or making intentional choices about food and drink to fuel your body properly.
- Mind: A habit designed to make your mind sharper. This is about training your brain as an instrument, likely built around consistent reading to engage with complex ideas.
- Heart: A regular habit dedicated to nurturing relationships with friends or family. This could be as simple as calling, texting, or emailing a different person each day to maintain connection.