That's good. You should feel the way that you do. A lousy photographer wouldn't get it. Painters have exactly the same problems, so being depressed over a valid situation is perfectly OK. In painting, when someone starts painting Picassos and Matisses, the saying is "nothing grows under the shade of a great oak". It's fine to emulate the masters, but at some point we need to move on. Not everyone can.
So, since it's all been done before (and done and done), what I decided was needed was a style, for lack of a better word, that was suitable. I won't say an original style, that may not be possible, but something that says me. Has to be something that I like too. This is doable, and possible.
What I finally came up with is shooting wide open portraits w/ a Leica R 90 lens in bright sun. It gives me the effect, somewhat, that Edward Weston was getting w/ that great head shot of the guy that had just fired the gun. He really blew out the background on that, and had that guy super sharp. The difference is Weston was shooting stopped down, while I shoot wide open. For some reason, and maybe to me only, this type of shooting is a direct influence of Weston's. With that R 90 Summicron wide open, and the right film, the right light, the right subject, and the right printing, I get a "look" that consistently works for me. If I hadn't come up w/ this (more by chance than anything else) I'd probably still be shooting those bell peppers endlessly and never, ever shoot one as well as he did. I wonder how many he failed with before he got his keepers? I'm guessing there were lots.
Anyway, the best fix for that depression is to go shoot some film. Lots of it. Load up the camera, shoot whatever interests you, and shoot 4 or 5 rolls on your walk/outing. Trust me, you'll get something that you like and can build on.