No one likes to say goodbye, especially to something that you’ve invested a lot of work into. But sometimes it’s necessary to let go of a project or product in order to be able to grow your business. It may be that it is no longer as popular as it once was, or maybe it simply didn’t work out the way you though it would. Or maybe it was just a terrible idea to begin with. Whatever the case, here are thirteen signs that tell you when to say goodbye to a project or product.