Finding Your Process: And, Finally...
Have confidence in yourself.
You have things to say and a unique voice.
Your writing work is just that -- work. And, ironically, the more you put in, the more effortless the result seems to be. It should convey what you need conveyed and be technically correct, reflecting well on you and your organization. But, it's not War and Peace. Don't be intimidated.
Asking for help to get your ideas or information to your public is a sign that results matter and that your ego is healthy enough to take suggestions or corrections! So, write, revise and have someone step in where necessary to assist you.
Now, go tell your story. You CAN do it!