If only there was some sort of automatic system in place that could limit the amount of time that people are allowed to access a game, to force them to log out and prevent them from playing themselves sick... oh wait. There is. It's called "Parental Controls" because the only people who shouldn't be 100% capable of prioritizing their well-being over a video game are children who have not yet matured enough to be responsible for themselves.

Any adult who is incapable of doing this on their own has much bigger issues that need to be addressed and should probably see a professional.