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At the age of 17 Ahmed Hankir left his family in Beirut as the brutal civil war raged across Lebanon.

When he arrived in the UK, he worked stacking shelves at a supermarket and at fast food restaurants, but never listened when people told him he couldn't study to become a doctor.

When he recently worked his first shift as an on call psychiatrist at St Thomas Hospital in London, he tweeted "I know what happiness feels like" - soon going viral.

Dr Ahmed Hankir spoke to Newsday about the challenges he overcame to realise his dream.

(Photo: Dr Ahmed Hankir with colleagues. Credit: Courtesy of Dr Ahmed Hankir)