work, really?

I'm having issues with my job. Or maybe just my boss.... and a co-worker... I don't remember having selling issues at any of my other salons. So I'm not sure if it's me or if it's the job. The pressure to sell sell sell is way too high. Not sure why they care so much. We get 100% profit from doing services. and no where near that % on products. So why the anger??? Why would you want to threaten jobs??? There is not that much money in product selling.
I tried doing this new thing at work, where I would document all my clients/cuts/and product recommendations. And I did worse this month than I have in the last year. Could it be stress?? the pressure?? or just the boss lady saying what a shitty job we are all doing CONSTANTLY! She keeps saying that we should 'prove her wrong'. I am sorry, I do not work that way. If I improve, I damn well hear a GOOD JOB! Otherwise, If I hear, 'not good enough' over and over, GUESS WHAT? I'm not going to try AT ALL. That is the way I work. You tell me I'm shit, than that is all you will get out of me. I'm done trying. I'm done. If you wanna cut my hours, PLEASE DO!!! If you want to fire me, PLEASE TRY! I'm pretty sure all my documents will get me unemployment. Otherwise, just leave me alone. seriously.

And the co-worker part. she just gives me attitude constantly. and she goes against the rules, constantly. and she is loud and annoying. and that is all.