Virat Kohli, who is expected to play a vital role in India's middle-order in the upcoming World Cup, said after realizing his importance in the team he has become a more matured batsman and is confident of his good showing in the ICC's showpiece event, starting February 19.

The 22-year-old Delhi lad said he has worked a lot on the mental aspect of the game and is more focused now as compared to when he first came into limelight in the 2008 Under-19 World Cup in Malaysia, where he lead India to the title.