How does confidence factor into this? I've been confident in stuff before and it turned out that confidence was misplaced. Pride cometh before the fall shit. Confidence alone risks cockiness. Cockiness may lead to somebody testing your Golden Shield. Didn't work. You now don't have a country any more.
If the Golden Shield really worked it's a question of capacity. If you had enough juice in it to repel all nuclear weapons you could throw at this country in a worst-case scenario, you'd have a powerful defense against the most powerful weapon on Earth that's ready to deploy this minute. It may not save you from conventional attacks. It may not shield you from chemical or biological weapons so gruesome they aren't currently shelf-ready. But development of those would suddenly become a viable prospect. I fear it just turns the spiral of development of more destructive weaponry one more rotation. Extrapolating from the last 6000 years of history, we've gone from sticks and stones to vaporizing people into thin mist by harnessing the power of the atom. We're already in the narrow bit of the spiral. Paradoxically, developing a Golden Shield against nuclear attacks may lead to wiping our species out for good.
Any other answer than professional therapy runs the risk of making it worse. But I know that it can be a luxury.
Out of sight hopefully leads to out of mind eventually. Actively avoiding these a-holes is one thing, having a good emergency plan when it can't be avoided is another. I don't know your life so you have to figure this one out yourself. In my experience, people that have a certain power over you in your mind immediately lose a lot of it if you imagine them naked, tickling the tip of their nose with a feather.
Are you reacting rationally when you're confronted with them? If you can control yourself enough to imagine the nose tickling, start there and see how it goes. If you can't get there and therapy is out of the question look for a fresh start somewhere else. Different part of the city, different city, different time zone. We are conditioned to think we mustn't run from our problems, which isn't bad advice but isn't universally true IMO. There are cases where you're allowed to just move away in the night, secretly flipping the old life off in the process. If after careful consideration going through all the pros and cons you arrive at this conclusion, don't deny yourself this option for dogmatic reasons.
A therapist, after disagreeing with me, would probably add that you should make sure you don't repeat past mistakes by creating new dependent relationships that could lead to new abuse. So keep that thought in the back of your head.