How do I stop solving the same problem over and over?

There is a special frustration in solving a problem you know you have solved before, and not remembering how. You fix things well; you just never write them down, so each fix vanishes and you pay for it again later. That is lost time you can get back. The reason you skip it is honest: when the thing is fixed, you are relieved and ready to move on, and writing it up feels like extra work for a problem that is already gone. But the problem is not gone. It is waiting to return. Make the note tiny and immediate. The moment something is fixed, write two lines while it is fresh: what broke and what fixed it. Keep them all in one place. That is enough to break the cycle. You are not writing a manual; you are leaving yourself a trail.