My mother in law constantly nags at me and goes out of her way to show me how unhappy she is with me! I do my best to help her around the house but there is always something she manages to pick on! I get so frustrated at times and I try to speak to my husband about it but he does his best to neither listen nor do anything about the matter. I'm worried and I do not know if my marriage will last. . .

It seems that no matter what you do, she will find fault with you. Hence, I suggest you really sit and talk to your hub about it as this is his mother. Your mil might feel that u r stealing away her son or u r not as good as her in caring for your hub. My friend's mil was like that and the breaking point was, mil scolded her till she cried. The couple eventually moved out and it actually helped the situation.