"I've always got such high expectations for myself. I'm aware of them, but I can't relax them"

In this quote, Mary Decker is revealing her propensity to set high standards for herself. She acknowledges that she understands these expectations, however she is unable to let go of them and unwind. This could suggest that Decker is a perfectionist and continuously pursues excellence in whatever she does. She may feel pressure to meet these expectations and is unable to reduce the pressure on herself. This quote likewise highlights the internal battle that Decker faces, as she is torn between wishing to achieve her goals and the desire to let go and relax.