As 2012 winds to an end, it's important for leaders to look back on the year that was, Les McKeown writes. Whether your company experienced significant success or colossal failure, you should be aware of how your team perceives what has occurred this year. "As the leader, it's your job to understand what narrative has taken hold in your team and to manage it accordingly," he advises. You should also attempt to get rid of policies or practices that are no longer useful.