Database yourself up
Setting yourself up to write is a bit like setting yourself up to cook a stew. If the vegetables are all cut up in advance you can put the thing together much quicker. All writing will rely on some data, analysis and thinking to be done in advance and organised in a useful way.
Want to write faster? You can. Excellent analogy in the article above -- if you want to write faster, you've got to do the prep work before you start.
Professional writers are like chefs in busy restaurants. We prepare the menu, attract diners, source the ingredients, do the prep, and cook several dishes in the time home cook would cook one.