The 18-year-old lad, who was diagnosed with hyperactivity disorder and intellectual disability, won a gold and a silver in figure skating singles and pairs respectively.
"I have been into sports for six years. I used to play handball and then I started ice skating just six months before the Winter Games," said Tiwari, who took up figure skating only in August last year.
"I faced a lot of financial hurdles, I didn't have the means to get a passport so I could not take part in handball event in Special Olympics in Greece in 2011," Tiwari told PTI.
"But I always wanted to participate in international level. So we had to arrange the money for training sessions ahead of the Winter Games. It was my international first trip," Tiwari said.
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Tiwari arranged for the money by a fundraising campaign where he collected donations from local businesses, family friends and even the local Municipal Councillor.
For Tiwari, it was always a fight right from the start. His father is the only bread-winner of the family of seven and earns his livelihood by selling artificial jewellery near the New Delhi railway station.
"My father has a makeshift shop at Sadar Bazar. I help my father in his work sometimes," Tiwari said.