Night lights can be good for sleep if they are used properly. Here are some ways in which night lights can be helpful for sleep:

1. Reducing anxiety: For some people, complete darkness can be anxiety-inducing and make it difficult to fall asleep. A night light can provide a sense of comfort and security, making it easier to relax and fall asleep.

2. Promoting relaxation: A soft, warm light can create a calming atmosphere in the bedroom, which can help promote relaxation and sleep.

3. Navigating the room: If you need to get up in the middle of the night to use the bathroom or get a drink of water, a night light can help you navigate the room safely without turning on bright overhead lights that can disrupt your sleep.

4. Helping children sleep: Night lights can be especially helpful for children who may be afraid of the dark. A night light can provide a sense of security and help children feel more comfortable and relaxed in their bedrooms.

Overall, if used properly, night lights can be a helpful tool in promoting relaxation and sleep. It is important to choose the right type of night light, use it in the right location, and turn it off when it is no longer needed.