Answer:
It most likely means a reminder that your past is still there and will not ever be truly gone
I will edit the answer after, i just kind of need more info:
is the essay about what makes people mentally strong?
people who went through things to make them mentally strong?
the impact mentally strong people make?
please comment quickly :)
3) Class distinctions
In Pride and Prejudice, Elizabeth Beckett's family wants to marry a rich noble because it will make them wealthy and be from a higher class.
This class distinction theme also appears in other books by her like Sense and Sensibility.
Hope this helps :)
Prewriting, writing, editing.