How to deal with a cold and unapproachable boss?

Anonymous
So I work at this job of 5 years. I've been there a really long time. I've also recently picked up a second job Christmas casual elsewhere to boost work hours. I also struggle with mental illness diagnoses and I receive treatment twice a week for it with a psychologist. I had a breakdown at my job of 5 years a few weeks ago and my boss just made me feel awful and I was a sobbing mess. Hin and his son now no longer talk to me as they did and for weeks they just cold shoulder me and my boss even made the comment I should consider living in a medical facility of clinic. I'm fit to work but I do struggle with mental illness quite heavily. My other job is just temp sadly but I am seeking new work ongoing and cannot afford to leave my workplace of 5 years where all the toxicity is. How can I handle this? My boss made me feel awful and tore shreds off of me and now I'm not worthy of acknowledgement and I am so scared, too scared to be around him. It's like he wants that. His son is 24, very religious and his dad gave him a higher up role here and they both just make me feel terrible and thus it affects my mental stability.
How to deal with a cold and unapproachable boss?
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