Final answer:
To improve sleep hygiene and manage chronic insomnia, the nurse should teach the client to keep a consistent sleep schedule, avoid caffeine and electronics before bed, and do relaxing activities as part of their bedtime routine.
Step-by-step explanation:
In reinforcing education about good sleep hygiene for a client with chronic insomnia, the nurse should include several crucial behavioral modifications to promote better sleep. These include establishing a consistent sleep schedule, avoiding drinking caffeinated beverages close to bedtime, steering clear of engaging with electronic devices while lying in bed, and engaging in relaxing activities before going to sleep. It is essential to maintain a consistent routine to help set the biological clock, reduce screen time before bed due to the stimulatory effect of bright lights on the brain, and perform calming activities to signal to the body that it is time to wind down in preparation for sleep.