I literally only remember like the outlines of events, I don’t remember like the colors of clothing, or exact words of converasations, or like smell of the room. How the f do people remember that stuff? Like, no way they have photographic memory, do they just partly invent detail?
Some people keep journals. When those people write their autobiographies, they can check the records.
Other people have good memories.
It’s probably also more important for it to be a good story than for it to be 100% accurate.