How do you write such good books?

All of the books that I read that are written by you I always think impressive it is to think of such amazing stuff. In Masterminds I was sitting in my living room trying to figure out what was in the warehouse. Starting to think how obvious it was. But just twenty minutes later I learn what really happens and thinking that I was way off. I let my grandma borrow my copy of Restart and when she was talking about it with me she was smiling so much because she had loved it.