A nurse is teaching a client who has post-traumatic stress disorder (PTSD) about using mindfulness to manage stress. Which of the following statements by the client indicates an understanding of the teaching?

"I will focus on pleasant images to distract myself from feeling stressed."

"I will concentrate on what I am feeling, seeing, and hearing in the moment."

"I will progressively relax my muscles from my face to my toes."

"I will use my smartwatch to track my sleep patterns and heart rate."