I often hear from other writers that they don't want anybody to steal their idea for their soon to be bestselling novel or movie. But all I have to say to that is this: Don't worry. Nobody's going to steal your idea, and here's why:
1. Nobody thinks your idea is as creative as you, the creator
Just when you think you've created Inception or The Hunger Games, you find out that Paprika or Battle Royale have already been created. The fact is, no matter how original you think your story is, somebody has already written a story that's pretty similar to what you've just written. So in truth, you may be creative, but so are a lot of other people out there and no man or woman is an island. I can guarantee that if you search hard enough, your story has already been told and told well. What matters is what YOU have to offer to that story. Your voice is all that truly matters, so focus on that.
2. Nobody has time to steal your idea and then write your story
Just think about how long it took you to write that story of yours that you've been dreaming about all your life. Hopefully, you took your time and went back to edit and revise where your story needed it, so it definitely took you a great deal of time to put everything together. Well, just think about how others work and then you'll see where I'm coming from. Crafting a story worth reading takes TIME, and most people aren't going to take the time to write a story that you came up with, even if your idea is dynamite. And this leads me to my next and final reason why nobody is going to steal your idea.
3. Other people already have projects they're working on that they feel just as passionately about as you feel for your project
If somebody writes stories, then they undoubtedly have a tale in their heart that they want to tell and don't have the passion to steal your story. Sure, they might take elements here or there if they hear something cool in your plot, but that's just the nature of the beast. We all pluck and steal from things that sound cool or have impacted us over the years. So don't flatter yourself. Others have their own stories to tell, too.
So the next time you worry about somebody stealing your idea, relax. Any idea you have has already been expressed and told. It's your voice that matters. So focus on that.