The writer's dilemma

Of course every writer is different, but I've noticed that we mainly fall into two categories: there's those who search for inspiration in every nook and cranny, but only see a blank page staring back at them. Then there's the kind of writer who are the ADD kids of the creative world--there's so much to take note of, so many stories to share, but as soon as it's placed in sentence form, it just looks wrong, or dull, or you realize that bestselling author just wrote the exact same story you thought you were so ingenious to conjure. All of these, by the way, have happened to me; I ended up fuming for a week, furious that the writers of Psych had stolen my idea! Mine!--which never left my house, so unless those writers were the next Shawn Spencer, they couldn't possibly have taken my plot line.
So what does one do when the words on a page seem better fitting for a 5th grader than the next hit novel? I'd take the mature route of crying, screaming, and hoping I'll find inspiration at the bottom of a pint of rocky road ice cream. Instead, what I find is a sick stomach and an extra heap of self-loathing. I'd write that into a story, if I didn't already have five going on at once. Yes, I'm the attention-deficit-"ooh, shiny!" type writer. I feel spectacular at a certain chunk of dialogue, and then I ram into the backstory and everything falls apart. I realize I actually have to know these characters, like I'd know myself, or a close friend, not some person I buy coffee from. There is a part of good writing that--gasp!--involves planning, outlining, and that awkward moment when I realize my eleventh grade English teacher was right. She wasn't just trying to torture us with those pre-essay assignments, nor were we just racking up mindless homework points. Still, as a rebel towards all things tedious, I consulted various books, articles, and experts on the world of writing. Maybe there was a loophole, where I could get away with not finding out when my characters go to bed, which end of the toothpaste bottle they squeeze, or what their biggest fears entail. All the experts essentially said the same thing: "What are you doing, reading about writing, when there's a notebook and pen in front of you? A mechanic doesn't call himself such by reading about cars; it's the same with the creative process." Only then did I realize my constant thinking about, and obsessing about writing, was my own form of procrastination. I had all the ideas floating in my head, but there they would stay if I didn't just sit down, shut up, and write. 
Most writers are perfectionists; I'm very familiar with the feeling that my first draft has to be worthy enough for Stephen King himself to be brought to tears. But just like with the pre-writing work, the revision process is pertinent to anyone's career. I can't bring myself to write total garbage, but I've allowed myself to write something, anything on a page, as long as it doesn't completely disrupt the flow of the rest of the story. I'm inspired to write maybe 1/10 of the time I actually put words on a page, on a good week. But it's so rewarding to see myself grow as a writer. I've gone from scribbling 180 pages of a story that was far too autobiographical (mainly it was rambling about how some boy didn't like this whiny chick), to planning and following through with more layered plots and characters. Even this blog has helped me grow as a writer. My life isn't nearly exciting enough to have some grand event to report every day, so I really have to work to find a new angle on the little things that happen in my daily life. It's helped me deepen my awareness of my own voice, and take a step back from the emotions that cascade through me. I still have the inner battle between the writer and the girl who wants to drink coffee in front of Pirates of the Caribbean, but it's gotten easier to let the creative side win, and to just write.