I have a really good idea for a fictional story in my head right now. I've had it for like... what, a year? I don't want to write it down yet, though, for I really want to expand in my writing talent before I begin anything I really like. Thus is the main reason my stories often lose inspiration as I grow older. I read the other chapters that I had written a long time ago, and I have a terrible urge to go back and re-write the entire thing. Do you know how annoying, time-taking, and frustrating that is? Well, when you've written 50 pages of stuff you think needs improvement, then you'll know what I mean. I had completely destoryed my story by an accident after deleting things, re-wording things, and possibly changing the entire outcome of the plot. So... yeah!
And remember those of you who would also like to become an author; to write well you should read a bit of literature everyday from a variety of authors so that your learning on expressing yourself through words will strengthen. Such as Tolkien, Hemmingway, Paolini, Rowling, even Shakespeare (whom I still have not yet read). To write well is to know good writing.