Do you, honestly, think you've got potential as a writer?

Speaking subjectively here, folks. I'm not a writer, I don't write for leisure as some of you evidently do. I only write when I'm required to do so. I personally, (and trust me, I'm not just being modest) don't think I have an ounce of writing talent in me, but much to my surprise, many others beg to differ. Particularly my English teachers. They've always praised my work, (assigned work that is), and have offered I send in essays into contests to which I declined due to my own feelings towards my work. I was awarded my first English award in the third grade. For what, God knows. I've received a few English awards throughout middle school and high school alike for unknown reasons and utter strangers have acknowledged my writing as well, claiming it to be...good or decent at least, for lack of a better term. Regardless, I'm unyielding in my belief that I'm rather average. I'm repetitive, ambiguous in a bad way, and did I mention repetitive? I have no desire to write. My limited imagination wouldn't allow it. Writer's block and I, we've become close friends over the years. So, personally speaking, I believe I'm a terrible writer, despite outside influences. What confounds me is the fact that many of my peers seem to have convinced themselves that they're a poor man's Charles Dickens when most of them can't even write in the simple yet magnetizing style of J.D. Salinger's. An ex friend of mine recently advertised on facebook a confession of hers, (if we can even call it one), claiming that she is 'actually a terrific writer.' She can't even articulate her points when I argue with her, let alone write. Her social networking statues are appallingly ignorant and the majority are grammatically incorrect, yet she has the nerve to proclaim herself a great writer? It's just something I find a little funny. I'm not trying to sound pretentious or precocious because I'm not. It's just that a person who doesn't even know the difference between 'you're' and 'your' and is falsely under the impression that their talent is comparable to a world-renowned author peeves the hell out of me. So, with critiques and flattery aside, what do you, per se, think of your own competence as a writer?