Job again – lp

I don’t know what to do. I am really unhappy at my job and I understand that it’s possible to be happy here if I changed my mind. I don’t think that I could even do a good job somewhere else, so that is also keeping me where I am. Everyone keeps telling me to quit and I kind of want to. I am living a lie by thinking all these negative thoughts and behaving like everything is fine. I really suck here. I can barely do the work that’s assigned to me and I feel so much shame about it. Somehow I’ve managed to stay in this job for 3.5 years. That just seems like a big mistake, why haven’t I been fired? I hate all of these thoughts. I’m so tired of hating myself