Hi,
I happened to have created the successful career of which you speak, only it wasn't a pivot move, but a pendulum swing whipped up out of thin air. I would venture to say that unless you have a love of writing (or desire to learn to write), outsourcing may be your best bet, at least to get started. If writing is even remotely part of the equation in your decision to shift your career, then by all means, put the time and effort into doing it yourself. No one can communicate or express your experience, perspective, and passion for the topic better than the one who lives it.
That being said, if you would be so kind as to provide more specifics as regards the proposed project, I would like to be considered as a possible fit.
Thanks, and here's wishing you great success and happiness either way :)
jo