When I started at amazon I was encouraged to pitch a project or feature once a month. More importantly I was encourage to write up things I disagreed with or try to sell stuff that was very half assed, and work on getting it to a real idea.
As I did this I got better and better. I can write up 3-5 page design docs in about 1-2 hours now and these can bootstrap others into your thinking very easy. I've found that they also just ground an argument when everyone is arguing about totally different things. Even if they are now all arguing AGAINST your idea, you've made progress.
It's just a muscle you have to exercise. And iterate with feedback. Learn from where people have trouble understanding your document. If they don't understand it, take it as feedback that you are not clear enough.
When I started at amazon I was encouraged to pitch a project or feature once a month. More importantly I was encourage to write up things I disagreed with or try to sell stuff that was very half assed, and work on getting it to a real idea.
As I did this I got better and better. I can write up 3-5 page design docs in about 1-2 hours now and these can bootstrap others into your thinking very easy. I've found that they also just ground an argument when everyone is arguing about totally different things. Even if they are now all arguing AGAINST your idea, you've made progress.
It's just a muscle you have to exercise. And iterate with feedback. Learn from where people have trouble understanding your document. If they don't understand it, take it as feedback that you are not clear enough.
TLDR Write Write Write