Failing to meet expectations is one of the worst feelings someone could go through, that's why I decided that I hate them. People expect you to do stuff and say stuff but you can't always do that!
My parents expect me to get high grades. Some of my friends expect me to keep in touch, others expect me to say the right things when they're not feeling well... And it goes on.
I myself expect A LOT from life, friends and family, and when they fail to meet them it's just... Blekh! Maybe I should stop expecting and find something less disappointing instead.