Do you get on well with your mother in Law, I know that she cant be involved with you but maybe she could make some suggestions about coping with the job you hate. Would you be able to cut down on your hours, that's what I have done but only for three months because I cannot aford it. Its at the heart of your depression. When you are not happy at work everything is affected. Your husband knows how unhappy you are at this job, but thats no help really. How much longer can you grin and bare it. Best wishes.