Some cultures have a way of counting to ten on one hand. This represents six in one version of that system.

Since the first lines of your linked site mention SOLID and design patterns, you’re already onto the right stuff there. That’s the framework side of things. Beyond that, I advise you to go study the advanced features of your preferred language so you know how to code “correctly” and idiomatically in that language (although not in a way that obscures intent). Then it’s perhaps a mental hurdle to open your repos and know that all code has imperfections. Opening it may indeed help to improve it - code review is arguably the single most useful practice in code quality.

Why was the CPU late for work? Because of a bus error.