I've often wished when I started a book I knew what was going to happen. I talked to writers who write 80-page outlines, and I'm just in awe of that.
Research your idea. See if there's a demand. A lot of people have great ideas, but they don't know if there's a need for it. You also have to research your competition.
If I had to name the number one asset you could have for any sport I'd say speed. In baseball, all a guy with speed has to do is make contact.

