Expectation
/,ekspek'tāSH(ə)n/
noun
plural noun: expectations

1. a strong belief that something will happen or be the case in the future
• a belief that someone will or should achieve something

Expectation is the root of all heartache.
-William Shakespeare

Heartache
/'härd,āk/
noun

1. emotional anguish or grief, typically caused by the loss or absence of someone loved