Amateurs worry about gear, pros worry about sales, photographers worry about light.
I like that, but what do you mean by worry about gear? Like someone worried that they are lacking gear or worried about getting new gear? Or just putting too much emphasis on gear in the general? I know a guy that makes stupid amounts of money off stock and he loves his toys. But he'll admit that his favorite pics were his 5DII/24-70 even though he has tons of other lenses and a that 40mp Hasselblad cam. That's a pro.
I think Zdog is dead on. I confess: I worry about gear. Do I have the right gear? Can I afford better gear? Is my lens as good as another lens I might have bought? What gear should I bring? How do I carry it? Etc. And, yes, I am an amateur. I will never be a professional. I already have a different profession. If I had it (life) to do over again, would I move in a different (perhaps photographic) direction. Different, probably. Photographic, who knows?
But, can I become a photographer? Perhaps. Someday. I've been working on it, off and on, for a long time now. That's why I follow this forum. I started with a gear issue (when will that 60D come out?). Now, I follow and try to learn what I can.
Like the guy Axilrod knows, those of my photos that I like aren't dependent upon the gear I used. Could they have been better technically with better gear? Sure. Will anyone else like them? Who knows? I'm going to go worry about light for a while and see if it helps.