Hi Teresa
Of course it's achievable.
With your 20 years in management you should have no problems. It's just a case of seeing through all the jargon and long words that the people who write the standards like to use.
It really is quite straightforward, look on it as a competency interview - which it is. Read what the standards are asking and then think "what evidence can I produce to demonstrate my competence in that?"
You have a head start being able to write good english!

Dave