When we stop and look back at our past, we remember all those moments we went through to get to where we are, the sacrifices we made, and those we lost along the way.... People sometimes don't even imagine how much history there is behind a face, or how much difficulty that person had to overcome on their way to get to where they are.
Even we ourselves sometimes forget what we have been through in our entire life journey. It is when we stop to think and remember what we have lived through. All these endless situations, misfortunes and good times, are what have made us who we are today and what we are.