Struggling with Emotional Turmoil and Relationship Issues

I've been dealing with a lotbof emotional roller coaster for a while on and off. It seems like every time I'll get ahead someone or something sets me back. I have a therapist but my therapist has giving up on me and recommends I find someone else. I'm at a lost now and I don't know what to do anymore. I can get over the fact my bf has a "girl friend" that wants nothing to do with me but to cause problems in my relationship with him. And my boyfriend is so blind to it that my family and everyone I have told are sick of hearing it and thinking I'm the one that should just ignore it, accept it, and move on. His family already don't want me in their family now and I just put all my savings into this house we live in together. I have been threatened to get kicked out and I have no money to hold me over. My boyfriend already said he doesn't care for my apologize or anything now. I feel so alone here and unwanted by everyone now. Like I feel like the universe or God is doing this to me on to teach me something but I don't know what it is and why. My therapist told me I should write a book for others to read because I have dealt with so much pain, emotional torture, physical torture, depression, family problems, relationship problems, and more. Hence why when I do go talk to a therapist or doctors they don't know what to diagnose me with but C-PTSD. I need help because I'm breaking down to nothing now, and I don't know how much longer I can take it. I already started to hurt myself by punching myself, cutting myself with my nails that now I have to keep them short, I'll be doing dishes and I think about hurting myself with a knife. Everyone tells me to go to a inpatient hospital but I can't afford it and I just got a new job that I don't want to lose because I need the money for incase I get kicked out of my home and have to live in my car with my dogs because my family won't take me back in.