The difference between happiness and sadness and why happiness requires sharing.
Happiness is happiness only when it is shared.
If you're happy you feel like sharing it with someone, then only is there an emotion to it.
If you're sad you may keep your sadness to yourself, and the world won't care and it won't matter to you too.
Gam to akele bhi seh lete
Khushi baantne ke liye koi dost chahiye
I can keep my sadness to myself
I need a friend to share my happiness