Should I quit my job because my mental health is getting worse?

I dread going to work everyday. I'm depressed and cry the night before going to work. It's only been 3 weeks, and I can't stand the job anymore. I work as an accountant, and it's my first job out of university (I have a degree in accounting). My boss is nice, the place is nice and all but the problem is me. I never want to do all this for the rest of my life and have no idea what I'm doing at work.

I've told my parents that I want to quit, and they support my decision as they say it's my path and all that, but then what? I'm thinking of doing my own business and maybe part time job? I know I'm such a disappointment, I want to die sometimes too. But I just don't know what to do now. My mental health is worsening.

Please advice.

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