The speaker emphasizes the importance of brain health as a form of wealth, advocating for practices that promote cognitive longevity. Key strategies include ensuring good sleep, consuming nutritious food, maintaining social connections, and managing stress effectively. While stress should not be entirely eliminated, as it can drive achievement, it should be minimized to support a healthy cognitive life. The speaker also highlights the importance of staying curious and engaged throughout life, as needs and circumstances change. This approach aligns with the broader goal of extending both lifespan and health span, ensuring individuals can care for themselves and their families. Historical context is provided, noting the increase in global life expectancy from 47 in the 1950s to over 70 today, underscoring the importance of maintaining brain health to enjoy these longer lifespans.