It wasn't all too long ago that the only health your doctor would've considered seriously was that of your body. So, if you came in with a complaint of a broken bone or a bruised leg, then they would be able to help you. But if you came in complaining of a broken heart or a bruised ego, they may have stared at you blankly.
That's because psychological health, in other words mental health, was at one point not taken nearly as seriously as it is today. Today, doctors pay more attention to a person's emotions and behaviors as indicators of potential health issues than ever before.
Proper psychological health involves a normal emotional, behavioral, and social maturity to a person. This means such a person is in a healthy state of mental well-being, one that they can use to function normally in society and during everyday events. They have good emotional health, the kind affecting how we feel. They also have good behavioral health, involving how we act. Finally, they have great social health, the kind that involves our interactions with others.