Hello!

I'm a depressed/anxious person with BPD also who is supposed to be starting a job in a couple weeks. My parents and my ex partner says I'm not ready to do it and I should say no. I feel so depressed and anxious visiting my parents. I wake up horrified that I have to go through another day.
I'm on medication but I don't think it's working anymore. I really want to be successful at this job as I haven't been successful in so long. The job can be stressful and usually I start jobs and then immediately start missing work until they can me. How can I stay at the job?
I don't want to drain my parents of more money. I want to be like my brothers, working jobs and earning decent money and living my life. I know I would be happier if I was working because I would feel better about myself, I'd have fewer money problems, and I most certainly could afford my medication.
I need to get strength to say that I'm going to do this job and not fail under any circumstances. I'm just scared I will fail like I have numerous times before.