A lot of people try to figure out what makes a "good" book idea. How do you know if what you're thinking has the potential to be spun gold, or if you're looking at a truckload of future frustration? While this is a large and convoluted topic, here are a few basic points to consider: Not every idea you have is going to be good. And that's ok! In fact, it's an unavoidable truth. Some of your ideas will not be successful, and some will be downright ridiculous in hindsight.