Don't try to write tons and tons of code at once without ever running or testing it, it's not like being a great programmer is about being so smart that you don

Don't try to write tons and tons of code at once without ever running or testing it, it's not like being a great programmer is about being so smart that you don't need to run code to see if it works. Focus on streamlining your workflow so that you can do what you're already doing more efficiently. I frequently create small experimental scripts to iterate on one aspect of a larger program, and then file that example away. I'll likely come back to it to copy code for months or years. Unit tests are your friend as well. The other thing is, read more code. Read some legendary projects in your preferred language. Read the source of your favorite framework. You don't have to read the entire codebase if you don't want, but try to understand enough of it to see where the most critical parts of the design are, and then understand how that was put together. If there are specific aspects to your programming you'd like to improve upon, and it's an area I'm knowledgeable in, I'd be happy to recommend specific resources.