"Luckily, there are numerous science-backed tactics that facilitate your ability to fall asleep and get high-quality sleep for seven to eight hours, which is what’s recommended for most adults."

As a chronic light sleeper, I am always on the lookout for healthy sleep tips. I've yet to find one and have tried and failed with all the "tips" in your very good article. I have several friends who also suffer. Big issues in a city are light pollution and noise pollution. Blackout drapes don't work. Ear plugs don't work. White noise? Forget it. Just annoying. I have come to the conclusion, I am a natural Short Sleeper: https://www.sleepfoundation.org/how-sleep-works/short-sleeper-syndrome