Everything is a progression. Approach writing the same way.
First is the mechanics of writing. That is the actual mechanical action of getting words on a blank sheet.
Before ever have written a page, journal, essay, short story, screenplay, the hardest thing about writing is filling those pages with words. Let alone have it make sense, be something of quality, be something relevant, resonant and remembered.
This stage of learning the mechanics is not pretty, it’s not coordinated, not fluid or intuitive it’s not meant to be. Just do and be. Your mind and body will make the adaptations.
You won’t have confidence, feel secure or trust you can do it, throw that out the window. Just let it be what it is. Don’t judge it by whether it’s good or bad.
The goal here is to make the mechanics of writing automaticity, storing this mechanical part of of writing as involuntary, automatic as a reflex, innate process, this is when the mechanics become instinctual and intuitive. That is the most daunting task now isn’t trying to start or trying to finish a writing project.
Once you get this part automatic then you can stack the next progression ontop of that. Going through the same process with adapting new and different skills. We build the process so that we can easify the mechanical parts in order to free up more mental energy for the creative parts and decision-making.