Here's something that I don't think that a lot of people legitimately have a problem with, but it's something I personally address all of the time: getting lost in big words. People like accreditation, yes? The problem comes when you're fumbling through a thesaurus trying to find the largest, four-syllable synonym you come across just so that you can use it in a sentence. See, the problem isn't in the word usage as much as it's probably in the voice.
Ways to combat this:
Elaborate words, incidentally, are not a prerequisite for a labyrinthine, yet, unequivocal piece of writing. You just need to get to the point, yo. I'm personally a fan of people who use the language rather strategically--flowery enough to provide accreditation, yet, simple enough for me to NOT think that this just another haughty person who's trying to impress me with big words. Just say what you're trying to say; you don't need a mess of four-syllable nonsense.
Next, try writing in active voice instead. You'd be surprised with how much your writing will change when you switch from writing in passive voice! Here's a nifty site with some easy-to-follow tips with how to switch to active voice and what it means. Active Voice Tips