Answer:
I have not encountered a wise person but I would recognise him /her as a wise person if he/she would always speak the truth.
Simple, it squirts out the dark ink from its body, that spreads quickly in the water and then it is very difficult to see past it, while they attacker is wondering where it went, the octopus swims away quickly
It is somehow related because Sad Perfect is a book about a girl who has an eating disorder, as you know this is not an easy thing to deal with so it would not be uncommon to hate your life. It's not a quote from the book but it can relate.
Answer:
In the first part
"Dear future me,
This is what I want you to know
You used to always cover things up
But now the world's gonna know"
Maybe change the last know (bolded) to "be aware", "realize", or "see"
Explanation:
It sounds repetative. Despite that, very good poem! :)