I divorced a narcissist. It was a year and a half of hell, but I made it through and never looked back. If you contact the domestic abuse hotline, they can help you get away safely and keep you safe. They can recommend an attorney who can help you get through the divorce. He will probably be required to pay for insurance and also give you child support. These things can be worked out. You are not doing your kids any favors by staying with someone so cruel.