Some people believe that their purpose in life is to make a difference in this world. And in their own capacity, they do what they can to leave their mark. One such person, Krishna Das, has certainly gained some fame over the past few years, especially amongst Mumbaikars. He stands for hours in the sun, holding a placard and smiles at passersby at the Juhu Circle traffic signal in Mumbai.

If you're wondering why? Here's his story and it has all the answers:

To some he's a hero, to some he's just a blur. He watches the world drive by, literally, and yet, he stands there with a purpose & a smile on his face.