Different errors are bred from different natures. Sometimes potential goodness actualizes in bad things, and the solution is to direct potential goodness into being actual goodness.
Compassion is a good quality; however sometimes it gets used wrongfully. A woman may have compassion for men, so she would be sleeping with everyone. A man may have compassion for women, so he would try to help them by having relationships with them. The correct solution in this scenario is to show the person that what they are doing is incorrect, and then direct their attention to doing things that are good for real.
Patriotism is a good quality as well; however it stops being a good quality if it leads people to start wars. Once again it must be channeled correctly – into making one's country the best place that it can be. This is something that Americans understand better than do say Russians; and on this matter Americans have much to teach both Russia and the rest of the world.
With people who are troublemakers, the correct solution is to show them the wrongness of their ways. Some can be convinced rationally just how much more they have it here than they would have elsewhere. With ones who would not do that, the correct solution is putting them through hardship. That way they will both learn to be strong and develop appreciation for what they had before. And that will give them the insight that they need to live rightfully.
Not all errors are spawned of the same source. There are many possible sources for error. Sometimes good natures can lead to wrong outcomes, such as when a person sympathizes with wrongdoers or accepts into her heart the lies of war-mongerers. Sometimes bad natures can lead to good outcomes, as when a naturally aggressive person learns ethics and temperance and uses his strength to keep the peace. In all of these cases, the correct solution is looking at what one is dealing with and figuring out how to direct it correctly.
So we see some people claiming that sociopaths and suchlike are evil and can only be evil whatever they do. No, that is wrong. Anything capable of choice is capable of choosing rightfully. And then there are people who, as a Torres Islander friend of mine said, think that their shit does not stink. That is also wrong. I have seen even the kindest people act in vicious ways when believing things that are untrue, and there are many perfectly good citizens who do horrible things during wars and other conflicts. Some natures are in fact better than others. However there is also the role of choice. And choice redeems even those of us who have bad natures.
The correct solution in such situations is to see the nature for what it is and then take a two-pronged approach of correcting the nature's potentials for wrong and directing it to do what is good. The amount of effort put into such things will depend on the person's nature. You do not turn a dog into a cat or a cat into a dog. You teach the cat to be the best cat that it can be, and you teach the dog to be the best dog that it can be. And then you prevail upon cats and dogs to be good to one another.