The problem with expectations is that everyone, at some point of time, have some of them, with or without doing anything in the first place.
We “expect” someone to do something for us, just because and this is something that is in your head. Now looking at this from the other person’s point of view, he is not liable to do anything at all.
Another scenario is, when you specially do something, just to get something in return. Another form of an expectation. However, the deed was with motive and not from the heart, and yet again, if it isn’t reciprocated from the other side, it is you who feels disappointed.
In every scenario, it boils down to one person being disappointed in the entire transaction. Wouldn’t it be better if you stop expecting and if you just do? Wouldn’t everything be simpler?
Think about these “one-sided expectations” the next thing you expect something in your head!