This made me think of my first job. I was the sole developer on a project because the old developer left. Nothing was documented and nobody knew why things were designed the way they were.

We had no code reviews, no design docs, no tests, nothing. We made the changes the way we thought they were right and would git pull them onto the production server.

After I struggled to get productive for the first four months, my manager went on a four-week Christmas vacation. In a moment of frustration, I seized the opportunity and rewrote the whole project from scratch. I don’t remember if my manager ever noticed, but that was the moment I finally got productive.