When lies turn into a despicable habit, this is what you call lying by reflex or compulsive lying. Too much is bad and in this case, because of people's persistent lies, they are made to believe that lies are already true and they dismiss the whole truth, cast in its shadow. When it's out of bounds and reasonable perimeters, lying can be a pathological disorder. Act on it before it's too late. Don't let liars get away with it, because if you do, the more you're encouraging them into a habit of treachery.