Expectations

I have high expectations for myself. In my running, I expect to be really good. I am not up to my expectations in running yet. In school, I have high expectations in my grades. I am once again failing to meet my expectations. I wanted strait As. I did not quite get them. The Bs are high and I can bring them up, but I am still disappointed.
Expectations are really disappointing. It is similar to the painting in the Tao of Pooh. The people expecting the vinegar to taste good were disappointed by the taste. But the person expecting the taste of vinegar was not disappointed by it. High expectations are nothing but disappointment. Maybe I should lower my expectations?...