The story of a successful startup starts with the story of the person behind it. As a young man, Vijay Shekhar Sharma struggled to follow lectures in English, survived on Rs 10 a day but certainly had big dreams. Today, he has Jack Ma and Ratan Tata among his investors, and his startup which is now one of India's biggest, is valued over a billion dollar. Watch as we speak with Vijay Shekhar Sharma, the man behind Paytm.