When I started as a book packager, there were 40,000 books published every year. Every single book I did, every single one, had a substitute.
Every time we had an idea, every time we were about to submit a proposal, we discovered that there was already a book on that topic. Someone else had 'stolen' my idea before I had even had it.
The only topics I invented that had never been published before were books I was unable to sell.
No one expects you to do something so original, so unique, so off the wall that it has never been conceived of before. In fact, if you do that, it's unlikely you will find the support you need to do much of anything with your idea.
Your ideas have all been stolen already.
So, now you can work to merely make things that are remarkable, delightful and important. You can focus on connection, on making a difference, on building whole solutions that matter.
Isn't that a relief?