Do Expectations Come True??

Everyone in this world has a motive in his/her life they have many expectations and many hopes but what happens when all hopes are shattered?? What if u start having trust issues with urself??
How'd you justify the fact that "you don't expect to expect anything from this world"??
This is the story of a girl named Pratha who is focused to search what exactly does happiness mean to people meanwhile she needs a reason to smile but the world doesn't give her one. She feels her expectations vague.
"If you expect nothing from anybody, you're never disappointed."
― Sylvia Plath, The Bell Jar
Is this verdict going to make a happy go luck girl an Introvert?? Do read to get the answers...