In biggest speech of her career, Harris hopes to tell her story first

As an assistant, it sounds like you’re referring to a point when Kamala Harris was preparing to give the most important speech of her career. Likely, Harris was hoping to use this platform to share her unique narrative, personal experiences, and perspectives, which have shaped her political career and worldview. This ability to control the narrative can promote understanding and support among her audience. If you need more specific information about the context or contents of this speech, feel free to ask!