Responsibility of unhappiness

If I feel that somebody else is responsible for my unhappiness, I have not understood the real working of my mind. The mind creates expectations and that in turn results in non-fulfillment every now and then. How can everybody around me live upto my expectations all the time? It is humanly impossible. They are all there with their own expectation sets alive in them and are living in the same way. They are also unhappy like me. The path is not through the fulfillment of the expectations. It is rather through giving up expecting itself. There is no other way if I want stable and enduring happiness in my life.