The basic concept of sleep hygiene — that your environment and habits can be optimized for better sleep — applies to just about everyone, but what ideal sleep hygiene looks like can vary based on the person.

For that reason, it’s worth testing out different adjustments to find out what helps you sleep the most. You don’t have to change everything at once; small steps can move you toward better sleep hygiene.

It’s also important to know that improving sleep hygiene won’t always resolve sleeping problems. People who have serious insomnia or sleep disorders like obstructive sleep apnea may benefit from better sleep hygiene, but other treatments are usually necessary as well.

In other words, even though it may be beneficial, sleep hygiene alone isn’t a panacea. If you have long-lasting or severe sleeping problems or daytime sleepiness, it’s best to talk with a doctor who can recommend the most appropriate course of treatment.

Sources - https://www.sleepfoundation.org/sleep-hygiene