Once again I'm going to borrow from golf for a photographic analogy. Hole in one is not a phenomenon limited only to the best professional golfers. I'm sure in fact that the vast majority of holes in one are made by amateurs who's only requirement is the ability to occasionally hit the ball long enough to go in the hole, there being so many more of them than of top professionals. Of course, the ability to once in your life make a hole in one does not make you capable of competitively playing Tiger Woods, at least not at golf.
So it is with photographers. The vast majority of 'Wow' images are made by amateurs. If you doubt this, check out one of the photo sharing sites. On the other hand, few of them are able to go the equivalent of 18 holes. Some part of their photographic game is really strong, but they don't have the skills or creativity to be well rounded photographers who can make creative images in a variety of situations. Their images tend to look all alike, well beyond any style to simply downright repetitive. They may win contests but are unlikely to make a meaningful body of work.
So what's the relevance of this analogy? Well, if you see yourself as being one of those specialists or lacking the ability to really work with a project or see that your successes have more to do with being there than creativity, then you might want to work on your weaknesses. You don't get to be a good golfer by only working on the driving range - even though you can make some pretty impressive shots.