Expectations

I think one big mistake I make often is setting my expectations of others to where I think they should be. I guess I feel that no matter what, I should try to make people feel better, to smile, to feel ok about things going on in their lives. I hope I live in such a way that I give of myself to others. I sometimes expect people to react to something or respond in a certain way and then I feel disappointed. I need to learn to not "expect".