Sleep hygiene is developed extremely early in life. My parents insisted that I go to bed by 8 PM every night until I was in 4th grade. I remember thinking it was absurd because everyone else in my class stayed up until at least 9 PM on school nights. Sometimes, I’d be going to sleep when it was still bright outside, and I’d dream of being able to stay up late enough to watch Project Runway with my parents when it aired, instead of watching it after school the next day. 

I might have complained about it then, but I am still reaping the benefits of going to bed early and getting up early. Even as a grown-up who doesn’t have to get to the office until 10 PM, I make sure I’m home in bed by 12:30 AM at the very latest on weeknights. Getting a good night’s sleep is more important to me than basically any party or late-night social engagement, no matter how silly that may sound to those insomniacs out there. Sleep hygiene is much more about establishing good habits than it is about discipline, and the earlier you can develop those habits, the less of a problem sleep will be throughout one’s life.