Difficult husband and difficult baby

If I typed out all my grievances that have caused me to go into deep depression during this season of my life it would make up atleast 50 paragraphs on here. But how does one cope with severe depression, while having a difficult husband, and a difficult baby? I love my baby, she is my world and isn't the source of my despair. She is extremely difficult though. How can I show up for her when my cup is empty. I am struggling so much and my husband is very difficult and we have a strained relationship so not much help. I have no help and no one to talk to.