"He has been blessed with wonderful natural talent but, as ever among high achievers, his talent is underpinned by a willingness to work hard," wrote De Villiers in his column for the 'BBC'.
"He is a consummate surgeon at the crease, intensely focussed, working hard, playing the ball into gaps in the field and staying calm under pressure. He is always judging the right time to consolidate and the right time to seize a game by the scruff of the neck," he added.
"Beyond the golden talent and the iron determination, Virat has learned how to cope with the pressures of his exalted position."
The South African captain, who plays alongside Kohli for the Royal Challengers Bangalore team in the Indian Premier League, revealed that the "outstanding cricketer" is someone who is fun to be with off the field.
"Intense and serious in matches and at practice, he retains the invaluable ability to switch off from the game, relaxing, laughing and joking at every opportunity. He enjoys calling people by playful nicknames and he can find humour in almost every situation," said the 33-year-old.
"If you drive into almost any city in India, you will see his face appear on every other billboard," he said.
"Being the most marketable and possibly the most popular personality in a nation of 1.3bn people brings its own pressures: he simply cannot move without being begged for a 'selfie' and his every move, word and even gesture is relentlessly reported in print, electronic and social media.
"Twitter whirred when he stuck out his tongue to celebrate a wicket against Bangladesh. Virat has learned to live with these realities," de Villiers elaborated.
"When things don't go well -- and, unfortunately, for Virat as for anyone else, things don't always go well -- he falls back on his intense commitment and works ever harder until he turns the corner and meets the excessively high expectations," concluded de Villiers.
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