The main difference between a normal person who lies sporadically and a compulsive liar is that the former does it with an intention, such as achieving something or avoiding some kind of consequence. Instead, a compulsive liar lies without having to have an excuse. That is, they do it pathologically. And this is what is known as mythomania, which causes these people to lie as a habit, compulsively, and with total comfort.
Mythomania is a chronic personality disorder, which leads mythomaniacs to lie constantly, giving rise to situations in which they are forced to continue with their falsehoods until even having to create elaborate stories. But a common question that arises from this is that if they are not looking for a goal like anyone else with them, then what leads them to lie?
When a person lies there is always a reason behind it related to getting something or avoiding some kind of punishment. But compulsive liars or mythomaniacs do it for other reasons.
One of the behaviors that should be avoided when dealing with a compulsive liar has to do with confronting him impulsively, since this will only make the situation worse, because the mythomaniac will act defensively. It is necessary to maintain control and not confront him directly. Instead, an assertive attitude will be adopted, establishing effective communication in which you can make them see the importance of an honest relationship and how this behavior affects the person. To do this, healthy limits must be established.
