While sleep requirements vary slightly from person to person, most healthy adults need between 7 to 9 hours of sleep per night to function at their best. Children and teens need even more. And despite the notion that our sleep needs decrease with age, most older people still need at least 7 hours of sleep. Since older adults often have trouble sleeping this long at night, daytime naps can help fill in the gap.
It makes sense that relaxing with a cup of tea would help you wind down at night, and Cralle says you shouldn't underestimate its soothing power. "I like people to have a nice, relaxing transition from wake to sleep so they don't feel like they need to pop a pill or something," she says. "A cup of chamomile tea at night can be a nice part of that ritual." Chamomile has been used traditionally for treatment of insomnia and anxiety, and it also has anti-inflammatory and anti-bacterial properties. As with many herbal remedies, the science behind it is lacking, but it's definitely worth a try. (You can pick up a box in a really pretty, resuable tin on Amazon for $8.)
Throughout history, soldiers have faced serious sleep deprivation and have had to make do with squeezing rest in between firefights and in trenches, tents, and moving troop carriers. By necessity, they have to learn to sleep whenever and wherever they get the chance. Exhaustion certainly helps the eyes close, but it turns out the U.S. Army actively teaches this skill too.  

Science shows that meditation significantly lowers stress and reduces anxiety.[4][5] Meditation makes you aware of your automatc thoughts and impulses, and with that awareness comes more control. You learn to differentiate between a helpful thought and a destructive one. Meditation also rewires your brain, strengthening neural pathways that calm your nervous system.[6]
Give yourself some dedicated wind-down time. It doesn’t have to be a full hour or an elaborate routine, but try to spend at least 20 to 30 minutes doing something that relaxes you before you try to fall asleep. That could be taking a warm bath or shower, changing into comfy pajamas and sipping a cup of chamomile tea. Or something completely different — so long as it’s relaxing to you.