It sounds like a tough situation. I'd say, first, speak to your husband and his mom. Tell them that what they are saying is very hurtful and destructive. Let them know how you feel. Be calm and courageous. Then, begin building friendships and support outside the home. Find things to do and places to go that are interesting to you and your kids. Take them out of the house and to the library, museum or just to the park. Find people who share common interests with you, and spend time doing things you really enjoy. It is essential for you to take care of yourself. You can't control anyone else, so it's up to you to make your life as enjoyable as you can.