I agree with what everyone is saying. Do podcasts. Hire a ghost writer. Do whatever you need to do in order to get "the word" out. You know, you don't really have to be a great writer to do article marketing, or blogging.
If you just write the way you talk, likely, you will find it easier to write. Most people I know who say that writing is not their thing have a fear of doing it wrong. If you just simply write the way you talk, not only will what you say be more readable, it will be easier for you.
But of course, with the advent of podcasting you can simply just Talk the way you Talk! How easy is that!

You can do it!