Whatever the expectations others may lay upon us, we all have a natural tendency, one to which for the most part we are ourselves blind, to fulfill those expectations. Drawing upon that tendency, expectation itself tends to engender the very thing it expects. Not only do we have a tendency to try to live up to whatever high expectations of us we experience others as having. We have no less of a tendency to to try to live down to whatever low expectation we experience them as having for us, as well.