What color is your child's night-light?
Children really shouldn't be using a night-light at all because it is surprisingly unhealthy. However, if you find it to be extremely difficult to get them off the night-light, then at least switch them to a RED one. Most of today's night-lights have too much blue in their color. Even if they seem yellowish, they still have too much blue for use as a night-light.
The same goes for us adults though. Many of us have to use the bathroom at least once in the middle of the night. So, set yourself up with very dim red lights that you can use in the middle of the night if you absolutely need some kind of light on the path to your bathroom.
Great advice. Red light is really awesome.
In fact they make red lights for toilets so you can see where you are.