Emotionally confused

Suddenly got lots of emotion , what if my friends die what am i suppose to do , can i just continue my life without them? Haiz life is so full of surprises . i just read someone's blog , a friend of the person's blog i read just died . That guy was just 18 ,not even accoplish and hes gone . Makes me wonder what if it happens to me . Can i take it ? life is really fragile .One small little thing and we are gone . My friend ask me if i'm working and he had an accident,can i just leave what i'm suppose to do and rush to see him , i will and i will do it .No matter how important work is ,we should never neglect friends