Elder Uchtdorf teaches that just like we can develop physical or emotional ailments we can also develop spiritual ailments.  Through sin, emotional wounds, or the absence of light in our lives, we can have spiritual pain and grief.  In his talk, Elder Uchtdorf talks about how to overcome spiritual ailments through the light of Christ.  He is the great physician.  We can also be "bearers of light" as we help strengthen and uplift one another.  How can you bring more spiritual light into your life and the lives of those around you?