Didn't choose your family, did you? Yet somehow, they're the ones who make you feel chosen every single day.

The thought behind it

This line works by turning the expected explanation inside out: the thing you were blaming turns out not to be the thing. Family is the first ledger you never asked for: the people who knew you before you got good at hiding. Read it again for “15”. That is the point at which observation turns into a decision.