Expectations have a hold on us many times in the sense that we prepare and act a certain way even if the sensory input is different. We tend to create a reality out of expectations and our ego. Rationalization of why and what are among them too. Try this for example. Come to a heavy door or a heavy object to move like a sofa and push or pull. Notice if your body tenses in expectation to the resistance you expect or do you start moving and choose the right amount of activation for the work. This is in simple terms a description of how we fall into beliefs and the like. Learn what works best for you and make a choice. Choose the way of the king.