Formal:
* Biography: A comprehensive account of a person's life, typically covering significant events, achievements, and relationships.
* Autobiography: Written by the person themselves, telling their own life story.
Informal:
* Life story: A general term for any account of a person's life, regardless of length or formality.
* Memoir: A more personal and reflective account of a particular period or aspect of a person's life, often focusing on their own experiences and insights.
* Personal narrative: A written account of personal experiences, often focusing on a specific theme or event.
* Oral history: A recorded interview or collection of interviews with a person about their life experiences, often used in historical research.
The best term to use depends on the specific content and purpose of the story.