Not exactly in the post, but just well, On the Subject of Ideas as it were. And it's this:
I have seen so many authors look for An Original Idea. Or perhaps they need a super cool idea, or some other criteria for what boils down to The Perfect Idea.
And here's a big thing I always will take any opprotunity to bang on about:
Good ideas are overrated.
I've seen phenomenal ideas do terribly and I've seen terrible ideas do well. And while part of that is a matter of luck and marketing but even putting aside how the book sold, I mean on the base level of reading it the idea did poorly because the book was bad.
How well you execute the idea is what matters. That's the line level of working on the story, writing it, editing it, etc. If you have poor execution a good idea will fall apart under the weight of dangling plot threads and one dimensional characters, while a bad idea can be elevated until it shines if the concept is executed well.
What I'm saying is if you think "I don't have a good idea so I can't write" you're holding yourself back. Write your bad ideas, your weird ones, your ones that have been done a thousand times before. What matters is that you care enough about the idea to write it because a good book is a good book, a bad book can be made into a good book, and a book that doesn't exist is just a daydream waiting to be brought to life.
Pick an idea that you can keep writing, and then start writing it, and you're already ahead of the curve no matter the 'quality' of the idea.