Stories don't just end--they end with purpose and meaning. The Main Character gets into it with the Obstacle Character and eventually makes a decision whether or not to change his or her paradigm and remain steadfast to it. The fallout of that decision determines what it all means. Was it a Success and a Good thing for everyone to make that choice? Or was it a Failure and Bad all around? What about a mixture between the two? Answering this part of your story makes all the difference between a story worth experiencing and a story.