I am so sorry for your feelings of sadness. But it appears that in spite of it all you are staying on top of the water- you do have a job and a home. And you are still a young woman with a lot of life ahead of you.
I am eighty, live alone in a rented house;I have no family, and live on SS and a small pension and I do suffer chronic depression. But I have learned that I can cope with it and make myself happy- I have three pets I rescued, because they were unwanted; I have a garden and flowers; I like to cook and often take meals to neighbors. I feed the birds and squirrels, and read a lot, and enjoy emails from computer friends from as far away as Australia. And I enjoy going to church. Yes sometimes I feel depressed, but I am determined to be the master of my own fate; I choose to be happy; life is very short and I am determined to not waste it in a pool of depression. I hope the best for you