I am in a similar situation. Separated from spouse, who made it clear that I was not wanted at my home. I fought leaving my marital home, bec I knew my Mom wasn’t thrilled at the idea of me coming back. She’s pretty independent and had the house to herself. However, I realized that my living situation was doing more harm than good to my well being. So I moved out and filed for divorce.
Coming back to my childhood home takes a lot of inner strength. You may resent your situation, yourself, and b3eing at home is often a constant reminder of who you once were. It feels like your dreams (or failure to achieve them) are being thrown back in your face. I felt trapped, depressed, and stuck. That’s the worse feeling ever. Here’s what I did to help myself.

1) I got out of it by having an “attitude of gratitude.” I know it sounds cliche, but every morning I began to think of three things I’m grateful for. They weren’t deep, and sometimes it was a struggle. But I had a place to lay my head, I wasn’t on the street, my dog was safe with me, and I was in good health. Sometimes I thanked God for a candy bar or for finding a dollar in a coat pocket. These gratitude items are literally my saving grace. When the world sucks and I feel moody and lonely, I allow myself to be in that mood for a short while, but I remind myself of new things to appreciate-the moon, good tea, a good book on my kindle, etc.

2) Also, I try to focus on the outcome I want, rather than the negative situation I’m in. Putting energy towards what you want will bring you closer to your desires. Focusing on what you hate will only increase your dissatisfaction, because you’re feeding the problem, rather than a solution.

These are methods that have helped me out. I hope they help you too.