Hello, there.

• Avoid browsing job listing. You don't need them if you subscribe to job offers by mail, so you receive them as soon as they are published, and you can reply to them en masse every morning;
• Make it simple and short on resumes and letters. Nobody reads outside a page and everyone sees through the bullshit (ditch sophisticated formulas unless the job requires it);
  
• Don't attach motivation letters (the main mail should be the motivation letter, the resume being attached to it in PDF);
• Customize every motivation letter (could be one word: I want to work at your company XYZ because..., the rest shouldn't change);
• And most importantly: back up what you write with what you say. Prep a 5 min speech: record yourself on cam, watch, improve, re-record, convince yourself. The motivation letter could be a brief summary of it.

I amazed an employer (and myself) with that last trick. I spent a week refining a basic "what/so what/now what" presentation about my shitty career path. There was nothing to say at first (dropped school, went to the abyss), but with easy training, you can turn any shit into gold with the right structural thinking (dropped school cause needed to experience real world...). Knowledge and structure resolves everything (even depression).

So, on my first job interview speech experimentation, I was nervously shaking, but I knew what to say, how to say and when to say it: saved my life. I even went as far as calibrating my body language (mostly my hands), so I couldn't afford to focus on my social anxiety. I was hired as soon as I walked out (and I thought I didn't even aced my speech).