I screwed up badly. My boss reamed me out. She has getting a lot of complaints about me.

I accidentally stepped on some people's toes answering some customer questions I wasn't qualified to answer. I was supposed to refer them straight to the reference desk, but these customers made it very clear that they were in a hurry and they wanted an answer right now, so I gave them an answer and my coworkers are very pissed. They have also complained about my not being attentive and playing with my hair (a nervous habit I have).

So my boss called me up and told me I was in big trouble and I'd better shape up or I'll be fired.

I need to get out. If I can get employed anywhere else, even Walmart, I'd rather work there than here. I do like the work I do here, but I can't work in a place where everyone is pissed at me and thinks that I should be fired, even if I deserve it.

Let me make clear that I 100% deserve these complaints and I deserve to get fired. I'm not trying to accuse my boss and coworkers are being unfair or anything. But I screwed up way too badly for it to be humanly possible for me to fix. This is 100% my fault. I understand that.

I'm so mad at myself for ruining a great job and a great chance at having a better life, but I suppose that's the consequence of being so lazy, stupid, and inconsiderate. Why do I have to make my life so difficult?