Lost

My husband seems to have totally given up on our marriage and is thinking of separation. He says he simply cannot change or fulfill my expectations. While all I ask from him is to be friendly, caring and be more understanding about my problems or situation. I too can see no hope because I know I have tried making him understand how I feel soo inferior and disrespected because of his constant criticism. I have tried and failed so I know I won't be able to compromise with my self respect, yet there is a voice inside me asking me to try save the marriage.