perception of life

high commitment + high effort + low expectation = right perception of lifestyle?
Over days of efforts and struggles not to think about it. It has reach the upmost point that I am able to handle. I am really trying hard to avoid the disappoint and not to have high expectation. But it seems like nothing goes the way I wish it to be.I knew that it is not the responsible that neither one of us should carry. It is just the differences in the concept of living.
Final is just around the corner and meanwhile I am worrying something that I should have get rid of long time ago. Perhaps I am just over sensitive in all these that I faced currently. After all, those are just small little parts. Perhaps I am really sucks in holding this kind of relationship. I am tired of waiting and giving out everything.
Will it be better for me to change all these perceptions?