Seeking your advice

Hello!

I’ve been developing a game for nearly two months now and would like to turn it into a commercial product. Right now, the main source code is quite large over 5,000 lines. Since I’m using Python, I chose to write everything in a single file to avoid issues like variable declaration errors. I’d really appreciate some advice on staying motivated and effectively managing the project through to completion. Do you have any recommendations or tips? I’m all ears thanks a lot^o^!