I totally get where you are coming from on the topic of writing. It's almost as if we work on making every aspect of the vessel to carry the work but deny ourselves from actually doing the work.
Writing is not easy. It'll take a metric ton of writing to "get good". My advice would be to hold a "fuck it, we ball" attitude and just write your heart out. So what if it's bad? Better to have a mess to show for your efforts than nothing but a blank slate.