Expectation is a strong feeling that something will happen. Through out our life we expect things to happen and get upset if it doesn't. Expecting things can be disappointed when it doesn't happen for you.
Sometimes we expect more from others because we would do that much for them and when they don't live up to our expectations we become disappointed.
What messes us up through life is the picture in our head of how it suppose to be and many times it doesn't turn out that way.
Expect more from yourself then from others because expectation from others will just disappoint you if they don't meet your standards. Don't expect things to happen, it's better to feel surprised then to be disappointed.
Learn to love without condition. Talk without bad intentions. Give without any reason. Most of all care for people without any expectations.
"Act without EXPECTATIONS" author Lao Tzu
Live and be happy!!!!