It definitely resonates, as I've thought about trying my hand at fiction as well. I really enjoy the act of writing, but have a lot of the same hang-ups as you (I'm extremely self-conscious about my writing). I don't want to be some stereotype hipster with no self-awareness, but I absolutely over-correct in the other direction.
I'm not sure that my ability to imagine these things so vividly makes me a writer.
What makes you is a writer is writing. I know we want there to be something more than that, but that's really it.