One of my former classmates has started a blog, and I have started reading it. There is absolutely no doubt in my mind that this woman is a writer. She is doing little more than presenting her thoughts, feelings, and experiences, but they are engaging, entertaining, and provoking.
What I realize, though, is that it is this simplicity that gives her work power. I am sure that she considers the things she writes and does some amount of editing or revising, but by and large, she is speaking her mind. Her thoughts go on paper (well, digital paper), and there they stay. And what better way to present passion and power than by presenting it raw to your readers?
Be sincere and heartfelt. You will guarantee yourself to not be phony, which makes your words a breath of fresh air. This doesn't mean your work will be pure gold straight from your mouth, but it does mean you have a great place to work from.
Writing is still an art, and it still needs to be crafted, but when you speak honestly, that honesty will ring through whatever words you end up with. And that's some damn good writing.