I am wondering if anyone has gotten any insight into this? any success stories?

Remove yourself from their presence and stay removed from their presence forever, is the obvious answer.

The obvious questions are:

What makes you think this person is an actual Psychopath?

If you find this person to be so disagreeable that you describe them as a Psychopath, then why have you not removed yourself from their presence?

In my experience every time with a psychopath you are in a hard time getting away, who would stay otherwise. That's why they choose these positions in society. You must have no clue what I am talking about.

MOD EDIT: Cursing removed, please no cursing!

You provided so many details and he still faield to get a clue out of it, what a dummy!

I agree with Wolfie, just get out. I feel like no matter what, it is not worth it to submit yourself to the presence of these people. Some people choose to behave like human garbage towards others just because they can. They do not care and they will never care. They just want you in your place to keep whatever they like on an even keel. You cannot reason with them, you cannot change them, you cannot persuade them. The only way to take them on is to become as bad as them or worse, and why would you want to see yourself become that? Just leave if at all possible, no matter how hard it is to do. Is this person someone you work for, or some you rely upon in some way?

Nothing good will come from those people ever.
They follow their own twisted goals and everyone else is a pawn in their game.

Stay away!!

and have a gud one a real gud one

Even telling others about them can be dangerous, because they groom their supporters. If you really think you're dealing with a psychopath, be very, very careful, and make sure that you give no sign whatsoever of being on to them before you protect your boundaries and make your escape plan.

Best way to deal with a psycopath is not let them know that you know that they are a psycho. Lull them into a false sense of security. Efficiently do away with them and destroy any kind of left over evidence. Then you can carry on with your daily life with nary a care in the world....

let them know yoou're thePsycho and you're in control of the situation. and of their emotions.

Ask Kikker how to deal with a psycho

Another vote for get out of dodge. You can't reason with the unreasonable, you can't beat them at their game. And you in all likelihood had nothing to gain from playing.

If you are bound to this person by some kind of situation at work then the course of action is the same, get away from them however possible.

Never let vulnerable people alone with them and if you are vulnerable yourself...make sure that there are always people around when you're with them. If there are no other people around, let the psychopath know that you have seen him (or, though less often, her).

People who are physically violent prefer to attack by surprise, and from behind.
By letting them know you've seen them, you already improved your chances by 20% or more.

People hardly ever go from totally passive to full attack mode in just a second.
If someone's behaviour gives you the creeps, don't ignore those feelings.
If you think that someone has a knife or worse, then just run. Your fists are no match for a knife.

If someone is not physically but psychologically violent, or in a position of power and abusive, then distance yourself from them.

If that is hard, build a casefile. Raport even the little things and collect evidence.
Make sure there are people on your side. Maybe other victims. Sexual predators usually don't target just a single person once, they often have a history of inappropriate behaviour.
Usually it's women, so:talk to other women. If it's men or boys...same thing.

Again here: don't let people be alone with them and don't be alone with them yourself.

First of all, psychopathy is both a imprecise, and outdated term.

Anti-Social-Personality disorder is a spectrum, and these people can be productive non-violent members of society, and most of them are in fact, who would have thought, not serial killers.

The best way to deal with a psychopath is in a manner they are receptive to, like all human beings.

Considering the condition, a no-bullshit truthful and transactional approach may be very fruitful. There is no one be-all, end-all approach to anything, its a very specific individual context.

My answer and if get away from the person and if your concerned for their wellbeing, yours, or others than seek help from medical personnel. But the first thing to do is remove yourself from the high risk situation.

If possible remove yourself from the situation ,

Elect him as president.

You can beat a psychopath, but only by losing as well.
If you can, escape. If you can't (you work for/with them), prepare to be hurt. Make sure that is worth it.
If you do take them out (because you have to), do not take joy in that. You will have become as they are if you do and will have lost more than you gained
"Be careful when fighting monsters, lest you become a monster yourself."

Google "grey rock method" if you haven't before.