Kirby's Third Law of Software Engineering

Always be ready to answer the question, "What have you done for me lately?"

Managers don't care if you were a super star two quarters ago. They only care what have you produced last week. And when they want to know, they want to know now. I always maintain some means to answer this question quickly: a Word document, a Jira query, a spreadsheet, a notebook. I even created an Access database for two different jobs where I had to track who I was billing to.