my life is making me extremely upset

so I work full time in customer service for a manufacturing company. I get yelled at every single day over the phone by multiple people. I also was not trained well at all so I have made several huge mistakes that only cause more stress. I'm not confident in this job at all and I hate it. I used to work reception making far less which I enjoyed but the other receptionist became increasingly verbally and mentally abusive in her behavior and HR allowed it and did nothing so I went into back end. i regret this change so much. I'm 30 and I live at home and have never moved out and now I comfort myself by thinking of gassing myself with chlorine bleach and ammonia or slitting my wrists because I am so disappointed and discouraged and without hope at how my life has become. my parents are disappointed and tell at me often, I have no friends and my mom says I have to suck it up and keep this job because it pays well, but every Monday morning I wake up wishing i had died in my sleep the night before. I just feel like I have no way out of my life and am completely trapped. I need a change but everything feels insurmountable. I have not mentioned this to my therapist, she is useless and doesn't listen to me. Really, I'm just looking for reasons not to end my own life at this point but at the end of the week it's hard to find any, especially I when i have to go back to work most Saturdays. I don't know what to do but I cannot live like this anymore.