There are a few things you can do to improve your sleep on PlayStation 4. First, make sure you have a comfortable bed and get enough sleep. Second, make sure your bedroom is dark and quiet so you can relax and fall asleep. Third, try to avoid screens in your bedroom and instead keep them in the living room or another room where you can watch TV or read without disturbing your sleep. Finally, try to relax before bed by reading a book or listening to music.