It is ironic that few years back people used to criticise him for his attitude. But now the same people will agree that his attitude and hunger for victory is one thing surely every person should learn. There are many things which one can learn from Virat Kohli. Some other things to learn from him would be.
Number one is Self confidence.
Very important thing to learn from him is his self confidence. For him it doesn't matter how the non striker is playing. He knows he is capable of chasing any score in the world and time and time he has proved it. He has never relied on anyone whole chasing those runs. Specially last few chases have been single man army chases.
Number two is Maturity.
The way he has matured over the years is commendable. From that crowd incident in Australia to People giving Standing ovations, He has come a long way. And we all know how well organised innings he plays while batting be it chasing or batting first. Even in your best dreams you can't imagine an inningsore beautiful than he actually play them.
Number three is Hunger for win.
His hunger for victory has been amazing. Remember when he was ready to risk a test match in Australia. when he told the whole team to go after the target and didn't tell them to play for a draw. If we had decided we could have easily played for a draw but he had other plans. sadly we didn't win but that was the first glimpse his hunger for victory for us. After that there are 'n' number of matches which he has won for us. And many more to come obviously.
Number 4 is Aggression when needed.
Taking stand for yourself and your fellow team mates and. defend them if the opposition tries to being their morale down. It was only for Pandya (debutant then) that was got into an ugly spat with Smith in Australia, T-20 series. just before the world cup. It was Pandya's first match and smith was throwing words at him. Virat himself involved in an ugly spat just for his fellow man. Such is the attitude of our future leader.
last but not least,Hardwork.
The success he has achieved would have been not possible if it wasn't for the effort he has put it behind it. Thousands of restless hours of practice it would have taken him to reach the level he is.