You are not alone here buddy. All of us go through such days and it's absolutely normal. I've, honestly, kind of started ignoring such stress because all it does is mental harm. You have to think beyond it, think about what loss you are incurring with this unwanted stress in your life. You could rather watch a movie or had some happy moments with your family, earned yourself some money, or written another post.

The best way to get out of such situations is to stop feeling pity for yourself. Step out, take a walk, breath fresh air, come back and without wasting another minute, get to work. And when you gain good from your work, your stress is gone.