Metrics should serve not only as tools for anomaly detection but also as instruments for continuous improvement. The article illustrates this through the author's personal experience with returning to competitive tennis, where reactive metrics like error rates and proactive metrics such as performance goals were both essential. Utilizing an app that provided detailed feedback on matches, the author was able to shift from random improvements to deliberate progress by setting specific goals and analyzing tactical errors through video review. This concept parallels business practices, where reactive metrics are vital for stability and detecting issues, while proactive metrics drive growth by setting clear objectives. By focusing on both types of metrics, teams can transform their approach from merely maintaining systems to actively striving for improvement, thus fostering a culture of growth and creativity.