The document discusses how acting as a "Scrum Mum" by taking over tasks and directing teams is not sustainable or scalable. It evolved from initially knowing little about agile and taking on too much work to help teams. This prevented teams from becoming empowered and self-managing. The author realized she needed to coach teams by empowering them, asking questions, and helping them improve and learn rather than just focusing on the process. An effective agile coach treats each team differently based on their needs and context, and acts as a leader to help teams progress through maturity levels to continuously improve.