"I'm not going to worry about anything that is beyond my control"

Catherine O'Hara's quote is a testament to her approach of life. She thinks that fretting about things that she has no control over is not worth her time and energy. Her declaration is a tip to concentrate on what she can manage and not to stress out about situations beyond her influence. Rather, she most likely selects to concentrate on things within her power, such as her actions, thoughts, and feelings. This technique to life is beneficial since it enables one to live freely without stressing over external factors. By focusing mostly on what she can deal with, Catherine's declaration reveals that people can prevent being overly anxious about things out of their control.