One of the things I hear all too often is: "It's all right for you, you can write, I'm an accountant." I was where you are one day and then I went to Accountants Anonymous and....I digress. Take heart. Two things:
See this from Michel-Edouard Leclerc. It doesn't matter if you can't read French. He runs E.Leclerc, one of the largest hypermarket chains in France. Yet he finds time to update his site almost daily. How? He's organised and disciplined. Ok - he was used to keeping journals. But we do that all the time. It's called time sheet filling - whether paper or electronic.
What about the writing side? The key here is to understand the kind of message you want to get across. My friend David Tebbutt runs training courses on this kind of stuff. On his website, I'd look at items 1,7,3,4,5,2 in that order.
Although his website refers to 'press' David has trained all manner of organisations. He, will help you focus on what you're trying to achieve, show you techniques for dealing with complex issues. If you wish and feel brave, he will also show you how to handle hacks - I mean journalists.