What light bulbs do you have in your home? In your bedroom, lounge, kitchen? What are your intentions with your light bulbs in each particular room? How bright are your screens? (Laptop, TV, computer). 

There is a lot of research on the internet, regarding light bulbs and their uses, it might be worth a read. (In daytime!) 

“The hamsters exposed to red light at night had significantly less evidence of depressive-like symptoms and changes in the brain linked to depression, compared to those that experienced blue or white light. However, total darkness at bedtime is still best for sleep” 

“Blue light is a stimulant that actually boosts attention and reaction times. These are not “benefits” that you want as you are falling sleep. White night lights also fall under the blue light category. The best colour for night lights is red or orange”

“Research has found that exposure to blue light suppresses the production of the sleep hormone melatonin more than any other type of light. Fluorescent bulbs and light-emitting diodes (LEDs) have taken over lighting because they are more energy efficient and can provide better lighting than incandescent bulbs.”

“Use dim red lights for night lights. Red light has the least power to shift circadian rhythm and suppress melatonin. Avoid looking at bright screens beginning two to three hours before bed”