There are plenty of people more prolific than me! I don’t want to bore you with details, but I have found the following helpful:

1. Keep a regular schedule (when I wake up and go to bed)
2. Write and code some every day
3. Exercise every day (but make it exercise that you enjoy!)

(Maybe if there is interest, I could write an article about my habits?) I don’t think there are universal solutions since everyone is different but in general, there are no shortcuts and it does require a certain level of dedication to consistently write articles. It also helps if you enjoy what you are doing!