Dr. Helen Bevan emphasizes the importance of informal networks and diverse relationships in driving change within organizations like the NHS, noting that traditional long-term change projects are being replaced by shorter, more dynamic initiatives. She highlights that successful change is fueled by various forms of energy—social, spiritual, psychological, physical, and intellectual—and stresses the necessity for leaders to harness this energy effectively. Ultimately, the key to effective leadership in change is to motivate and release the inherent positive energy within individuals.