Writing an autobiography enables the author to claim their rightful place in history. Moreover, the author can tell their story in their voice. As a result, autobiographers plant flags that no one can remove. Future generations can then take these flags as the roadmap to a brighter tomorrow.
Writing an autobiography is a process that requires the author to explore their emotions at various junctions of their life. However, the autobiographical process reviews the author’s life with the benefit of hindsight. Hence, the healing process can consequently emerge.
As a renowned writer and journalist Graham Greene put it, “Writing is a form of therapy; sometimes I wonder how all those who do not write, compose, or paint can manage to escape the madness, melancholia, the panic, and fear which is inherent in a human situation.”
The Tarot cards Old Memories promotes itself as the way to open a secret meaning encrypted in your thoughts, and suggests that this deck of cards is will help to open memories. Lisa Papez has a whole series of Tarot Memoirs on her YouTube Channel which will help inspire you.

Lay out some cards that speak to you, check out this post about Autobiography as a Tarot Practice and spend some time drawing upon the well of remembrance.
Alternatively, grab your favourite deck and systematically go through the cards, drawing on the memories the cards invoke.