How do I get back on my feet while going through a bad divorce?

I am going through a divorce. He is extremely angry. He refuses to physically assist me with our teenager daughter. I have no extended family support. Often times, I feel overwhelmed, tired, and joyless. I feel out of control, sad and depressed on a daily basis. I am just going through the motions of life every day. I am in my mid-50s. I have almost 29 years on my job. How can I handle this?