Okay, Folks, I too am joining the "encouragement" wagon.
Jim, first of all, you don't have a chance at quitting with cheerleaders like us on your side! The truth is, we would all be saddened by your departure.
As practical advice I would like to suggest that you model a writer who really touches you, or even just a story that has touched you. Print it out and put that story up in front of you. Analyze it, ponder it, dive deep into it.
Figure out what makes it shine for you, and then, keep that paper posted as you write your story. This is one of the things I do in order to learn.
In fact, this is how our homeschooling co-op teaches our children to write. We use a writing system derived from the Suzuki method of teaching music to students. The Suzuki method was actually developed to teach music by mimicking the way a child learns to speak---through modeling, immersion, repetition and a self-paced timetable.
Dr. Suzuki based his theory on the fact that children learn to speak (often through repeating a newfound word until mastered) before they learn to read.
In our co-op, we put the prescribed formulas to work for the kids--it's just repetition of some proved methods, like using several strong adjectives and verbs per paragraph, and varying sentence openings, etc.--and then it becomes second nature. And then they develop their style.
I have found that some of the things I love about my favorite FW writers are formulaic in mechanics, but not in style. You already have a terrific style!
Anyway, I hope I haven't been too wordy here (probably have).
One last thing I would say is, don't wait 'til the last minute to write the piece (you may not do this, but I certainly do). This is something I do way too often, which is the absolute worst thing. When I wait too long, I can't send it out to anyone to look it over, and I can't remove myself from the story for a period of time to pick out its faults either.
Now, I've definitely been too lengthy.
Don't quit dear Writerfellow,
Pro 3:3 Do not let kindness and truth leave you; Bind them around your neck, Write them on the tablet of your heart