My most discouraging plateau yet...

Following a string of some of the worst games I have played in a while, it's becoming clear that I'm still incapable of learning from my own mistakes. I have remained at a similar level, struggling to beat the same level, often worse, for a depressingly long time: a while longer than a year to be more precise.

Despite my efforts, it feels like nothing has really paid off. My tactics have begun to suffer much more than they used to. I still end up falling for silly tricks, leading me wanting to beat myself with a pipe every time, reminding myself not to make that mistake again; yet I do. I feel stuck trying to build any good habits leading me to feel like I've hit a really embarrassing ceiling even though I know I can do better... I know that my board vision is atrocious, leading me to make even the most elementary of mistakes when I do not hold myself accountable. I never feel like I am able to apply anything I have learnt from the resources I study from.

I feel stuck in a very tough place, and would like some advice as I have no idea where to start getting out of this hole.