I often find myself wrapped in a similar thought process. Looking back at what I wrote, knowing fully that it works, but questioning its “cleanliness” or its ease of change. I often worry that I will come back to it and have to spend a good portion of time piecing it all back together.
I’ve recently started reading about refactoring ideas by Martin Fowler and others. These made me realize the potential, but it is an art-form in and off itself.