I agree with the sentiment: Create a lot of stuff and code with passion and eventually one will become good at it. But at the same time I have to say this work

I agree with the sentiment: Create a lot of stuff and code with passion and eventually one will become good at it. But at the same time I have to say this works best for web development and not big software projects. Having programmed like you for some years I took a MSc. in Computer Science, and realized there were big gaps in my knowledge. I felt I could handle writing every program, but in retrospect there was just so much I didn't know. And this will not be learned just by coding a lot but will help with the coding.