Moderation. A 90+ man living in this "facility" just came off drugs to control his diabetes by watching his sugar intake and walking. Don't wait until you have a symptom; start now to control obesity, emphysema, COPD, alcoholism, etc. Even exercise can be overdone, as well as frugality and other traits that are fine "in moderation". Think how life will be without those bug-a-boos in your future.
To quote my college roommate: "Fine to a point, but not to be carried one step too far."
As a newborn, you will need to count on your parents to instill this in you. Good luck!