My husband, who has very little knowledge of the publishing world, has this theory. People have been writing books about about certain themes well before I started. They well write them at the same time I am writing mine, and they will continue to write them well after I am done. He calls it simple supply and demand --readers want books about certain subjects therefore, authors supply them. Combine that with his believe that ALL books revolve around one of several emotional themes -- love, hate, death, fear, desire -- and his argument is pretty solid. He is right. Case in point -- trends. But all his sound logic dissipates when you read a blurb about a "just sold" book with the same general theme as your own.
So I sit here and reiterate the same advice I have dolled out countless time myself . . . just put your own unique twist on it, make it yours, and make it better. Now, I just have to find a way to swallow my own advice . . . one word written at at time. I will; I will hack that book up and come at it from a different angle, make sparkle like that vampire we all hate to admit we love. And at the end of the day, I will be a stronger, a better writer for it. Or, at least here's to hoping I do :)