When you ask people whether they expect their life to be easy, everyone says, "Of course not. but when you pay careful attention to the way people respond to minor adversity, it becomes apparent that, in reality, we often do expect our lives to be easy.
Think about it. Why else would we go crazy and get frustrated on those rare occasions when there is a problem? The same can be said about the expectations we often have of other people. For example, we expect others to behave in certain ways..and when they don't, we become upset. We also expect certain reactions from people...but when we don't get them, we're stressed or disappointed. Similarly, we expect things to go a certain way and we're okay as long as they go as planned. But when they don't, we lose it.
A very close friend of mine once asked me a question that, has changed the way I looked at things. I was complaining about my life and my many troubles and problems. He looked me in the eye and said in a sincere tone, "Do you think you should be exempt from the rest of the human race?" He simply wanted me to understand that along with the gift of life comes plenty problems, frustration, and difficulty. No one is exempt from this inevitability. Always remember this in your life.