Do you think its possible for someone to change their ways? Or is it all false promises until things finally break loose?

Have heard of the rare life-altering event that has changed people. Giving them a wake up call about their life and their attitude and that spawned a serious change. But others with personality disorders it just made them more self-centered about themselves. I don’t know what it would take for them to change, I think they’ve set themselves up for some serious falls and still don’t learn from it.