Sleep In Complete Darkness Or As Close As Possible

Use light-blocking drapes on windows and cover up small lights on appliances in your bedroom that emit light (such as a switch light, smoke alarm, alarm clock or thermostat). When light is present, even when the eyes are closed, it can disrupt the circadian rhythm or the pineal gland and production of melatonin and serotonin. Also have as little light in the bathroom as possible if you get up in the middle of the night. Sleep with a mask if needed.