I had similar problem back when I was on university. I realized this was mostly caused by my emotional situation. At that time I had lot of fear, was quite hard on myself and I have built lot of expectations and wanted to meet all of them. I had to calm down, take more sleep and stop worrying too much. After that it improved quite quickly.
I hope you will get better soon, heck even if you publish 3-4 articles in a week I think that's totally enough. Good luck and thanks for sharing the struggles!
RE: A few changes to the way I publish