I know what you are going through. I went through the same 44 years ago. It is important that you know the rules, however.
1. You are the head of your family. God put you in charge of your family. Don't hesitate to tell the Elders to "butt out" of things that are none of their business. They will try to run your life if you let them.
2. Re: "the rules of attraction".; A Course in Miracles put the same idea a little differently:
"That which you defend against, you make real to your own mind"
As a Marine, you know the principles of judo which dictate that you use the opponents moves against him.
3. Your kids will be very, very, bored by the continual meetings and studies. The programs are not designed for kids. It is your right to insist that they get their school homework done before going to meetings.
4. You need to know more about the bible than they do. I would recommend "The Interpreter's One Volume Commentary on the Bible" edited by Charles M. Laymon.
5. Don't neglect your own spiritual development just because your spouse has "gone off the deep end". I think my wife was suffering from "post partum depression" when the Witnesses knocked on the door.