Buddhism tells you that change is inevitable. The Bhagvad Gita that you should not expect any results from your actions to be spared the grief. As a child, these concepts seemed so simple, hardly the precepts of two great spiritual paths.
Expectations – Buddhism believes that they are the cause of great suffering. The expectation that your friends will always remain your friends, that they will be loyal to you, that the feeling of companionship will remain to the same extent over time.