The No. 1 comment I've gotten about this blog is that people like the writing. Despite being left to deduce that the jury is still out on my competence as a parent, it is a wonderfully motivating compliment.
Unlike running, which I loved even when I measured my progress by how many spots I was from the back (third-to-last was a shining moment in high school cross country), I don't think I would write if I didn't believe I was kind of good at it. Not outrageously good, but good. The world is full of people who are extraordinarily talented with words, and I don't think I belong anywhere near that echelon.
But, at Brian's suggestion that some people might be curious, I'll share the fundamental writing rules I follow (Hint: the only mention of grammar is about misusing it.).
I like to study others' writing styles. When I come across a sentence that resonates, I read it two or three or ten times before continuing, and then sometimes have to go back a page to remind myself of the context.
I tend to be a sentence-level reader of life in general, often missing the obvious in favor of the detail. As for writing, picture an indoor rock-climbing wall. The multicolored ledges are the words, images, or ironies I grab, one at a time--with just tiptoes pushing off the one before--to propel me to a conclusion. I would not be able to tell you how high the wall was--the primary fact most people would use to describe the experience. I'm not sure if this perspective is a quirk or a fault or a gift, but with the right editor it works. With blogging I'm on my own, so I try to read my work pretending I'm a specific other person, like my mom or the mailman, to identify anything that might seem awry to someone not in my head.

I'm more of a traditionalist when it comes to the writing process taught in Comp 101: brainstorm, outline, draft, revise, revise, revise.
My brainstorming for creative projects takes place around the clock. I think the best way to avoid the dreaded writers' block is to, instead of wracking your brain for a good idea, go about your life and be ready to capture interesting thoughts when they strike. For me, this means keeping a notebook and pen nearby, especially on the nightstand (I usually try to lean over and scrawl without turning on the light). When I was taking poetry workshops, I even kept a mini cassette recorder in the car. I might start doing that again. The beginnings of a recent post began while I was driving Annalie to a doctor's appointment. I kept repeating phrases to myself, lips moving, until we got to the parking lot, where I could search for a scrap of paper and a working pen in Brian's car and jot the important points down before they floated away like soap bubbles. (I'd mixed up the time of her appointment anyway, by three hours, so we weren't late.)
With articles for publication, I usually draw up an old-school outline with the Roman numerals and everything. Sometimes I have to do it for manuscripts I'm editing; and it is a total bitch to assign organization after the fact. I'd rather start off with a plan and then change it than have to take a brain dump, as intelligent as it may be, and sort it out.
However, when beginning to draft, I try to start with the idea that will capture the most attention, even if it's technically nowhere near once upon a time. In most cases, it's better to do a little extra work to start in the middle and get it to make sense than take up space with a logical but ho-hum beginning. I once had a creative writing professor who would have students read their work aloud--and routinely interrupt them in the middle of their first sentence with, "Nah, doesn't grab me. Who's next?" As infuriating as this little game of his was, yeah, I learned something.
Revision and self-editing, as I mentioned, are mostly about reading from someone else's perspective. Would your next-door neighbor get anything out of that statement, or could she use an example? I'm also kind of picky about the integrity of each sentence and paragraph on its own. A good way to test whether you've written re-readable prose--in a positive way, not because it's confusing--is to read your sentences and paragraphs in reverse order.
Before you consider yourself done, be a ruthless word cutter. Think of it like trying to fit all of your shit into a U-Haul making one trip. Leave the cool but broken lamp in the Dumpster.
Outside of these basics, 90% of my tricks include experimenting with punctuation, sentence length and rhythm, and breaking the rules on purpose. To get away with fragments and other liberties, the rest of your piece must be clean if not immaculate. And there needs to be a reason to veer from convention--to slow the reader down, for example.
Finally, sincerity is paramount. Even with fiction, the best passages are derived from something the writer actually saw, heard, or felt. It's fine to mix and match experiences and sensations into different scenarios, but few people will believe an invented emotion.