As a songwriter, I try not to be sloppy; same with the music. You can be very lean, very efficient, so you're not wasting a lot of time getting' to the point. You're saying it with as pure a word or phrase as you can. That's the part that was craft. You refine and refine and refine. Maybe that's why the songs still hang on, because they're very pure. For one thing, they're very short. "Bad Moon Rising" is like 2 minutes and 12 seconds. I would try to do everything as quickly and with as little extra as possible. It was a challenge.
What happens is, especially when I was writing for my band, Creedence, and it's the way I write now, I go into "guitar lick" mode. When I do, it sort of leads into a real song. I'd say to myself, your songwriting is coming up with a guitar lick, and the rest is easy!
I practice really hard, every day. I started that about 13 or 14 years ago; it's a discipline now. But the writing is a whole other thing. It'll come from handling a guitar, mostly; thinking up little guitar riffs. I was born and raised a rock 'n' roll guy, and that's the rock 'n' roll ethic, at least through my experience.