Personal. Because a memoir is a story about you, by you
Hope this helped! Let me know if I need to clarify anything or explain more in depth!
First-person point of view
The first person point of view is the most suitable point of view to use when writing a memoir. This is because a memoir usually discusses the author's own memories. Writing a memoir in the first person allows the author to express complex and deeply personal thoughts that any other type of point of view would not be able to recreate. It also allows the author to recreate as much as possible the experience of the actual events when retelling them.
because the text is yours and is personal