friends in my opinion,friends are the most invaluable part of one's life and forgetting them is a difficult task...when you have your friend with you,you don't understand the effect on your life,but once you get far from each other,the memories parade in your imagination and you just wanna cry...I now really understand one of the resons of life:to be with each other,help each other & like each other as loneliness is the worst enemy of mankind....