The scenario you described with George Burns represents the concept of discipline and routine leading to success. In both his training for a marathon and his daily work as a lawyer, adhering to a structured plan reflects the importance of consistency, commitment, and hard work in achieving one's goals.
This can also be viewed through the lens of the growth mindset, where George understands that effort and persistence are critical to improving his skills and performance, whether in physical fitness or his professional career. Overall, this scenario emphasizes that success in any field often requires dedication to a daily regimen or plan.