Happiness n sadness...

i find that sometimes.. in our lives... the happiness that we get is built upon the sadness of others.. how so? well..let's take a look at our modern society... almost everything we do is competitive in one way or another... we always want to get the best in life and will do whatever it takes to achieve it...we might not know it.. but such stuff has been going on since young... take exams for example.. you are happy when you get the 1st position in class.. but this is so because there is someone in the class who got the last position.. you are happy when u get the gold medal in a race but that's so because someone else finished last..in working perspective.. you feel happy when you are promoted but there's a chance that you got that post because the previous person was sacked... in love perspective.. you are happy that you got the girl/guy of your dreams..but someone else out there lost that dream person to you...

Therefore... isn't it right to say that one's happiness is built upon other's sadness? perhaps that's the way life works for us... whenever there is something gained.. something has to be lost... to maintain a balance... some yin yang theory.. bah ...this is life for you...