Hi,
I hope you don't regret posting here. First of all, you may need professional help to get over some of your fears. It is always good to remain vigilant but I personally experienced that the world is not that bad out there and the majority of people are not out to hurt anyone. The fact that you can react violently to perceived threats is a big red flashing light with sirens that you're not over certain things.
As one of my posts makes clear, I have also been physically and mentally abused and the abuser has always been protected by the JW organization (head of household, do not spare the rod, don't go to the police as this will bring reproach on the organization's name, no JW eye witnesses...) even though my brother developed epilepsy, my mother had seizures (which were blamed on demons), me and my mother both attempted suicide and I was thinking of it a lot, I attempted running away, I developed drinking problems at 16, the school and doctors started noticing etc.
I've gotten over a lot of things but it will always have an impact. Write down what you actually would like to change (eg. affection from others, having to sit in the corner of a restaurant (I prefer that as well), always looking over your shoulder, having the feeling of being followed (I still have that as well), needing alcohol or drugs to calm you down in certain situation, always guarding your stuff and feeling someone is out to take it (I still have that)) and then make up a plan on how you will try to get over it. One thing you could do is just move over one booth or table in a restaurant so there's only 1 group of people behind you and get comfortable with it and for each point make up small steps you think you can handle and see how it goes.
Talk to your husband and friends and see if they can help you with anything. I found out people will accept you and help you out especially if they know your background. Talk about your JW-involvement and abuse even though it may be difficult and you feel embarrassed, most people will not scorn you for it but try to understand. I have a lot of people that asked me questions about the JW and one of my friends actually had a JW come to his door and he had an enlightening talk with them about the two-witness rule and the abuse in the church (they formulated some excuse and left never to return)