Isn't that the question we have to ask ourselves over and Over again? It's one of the reasons I like to read a series--because I know what I will be reading next.
But sometimes if I finish a book or a series I'm in the mood to read something that is similar to the finished book. If you are the same way then you should check out THIS site! Just type in the name of the book that you finished and it will give you a list of books that are like unto it!