This paper examines the efficacy of Daniel Goleman's six leadership styles in the context of Spark NZ's change efforts. It analyzes how each style, including Commanding, Pacesetting, Democratic, Affiliative, Visionary, and Coaching, has been implemented by Spark NZ and its impact on employee performance and organizational productivity. The paper draws on research and examples from Spark NZ's operations to illustrate the strengths and weaknesses of each leadership style in driving change and achieving organizational goals.