New Delhi, Dec 18 (PTI) The only second cricketer who led the country to a World Cup triumph, Mahendra Singh Dhoni says he is not 100 per cent sure of playing in the 2015 edition and will decide on it two years before the mega event.

"If you see 2015, still three, three and a half years to go. I don't really know where I will stand. Everything needs to go off well, and then by close to 2013, I will have to take a call whether I can really 100 per cent be available for the 2015 World Cup," Dhoni said.

"You don't want a wicketkeeper in the side who has not played at least 100-odd games, at least close to 80-100 games, going into World Cup. So that's a call that needs to be taken. But if everything goes off well, 2013 end will be time where we will have to carefully study the body and see what can be done," said Dhoni, who was yesterday named CNN-IBN Sportsperson of the year.

Dhoni has held aloft every cricket trophy in the world, from Twenty20 World Cup, IPL and Champions League T20 and to 50-over World Cup, and he said he would want to win the 2015 World Cup though he is not 100 per cent certain to play in it.

"Well, why not do it all over again? If you don't really have a dream, you can't really push yourself, you don't really know what the target is. It is important to stay focused, have short-term goals, not look too much in future, and try to win each and every series that is coming. Of course, you won't be able to do that," he said.

Asked about his hero in life, Dhoni picked his team-mate and cricket icon Sachin Tendulkar and Bollywood superstar Amitabh Bachchan. "Well, that's a very difficult one. There's someone like Sachin Tendulkar, who is a part of the side, whom most of the individual cricketers look up to. And not to forget Amitabh Bachchan, who has been the biggest thing when it comes to Bollywood, and he is known the world over. So if you look at him, still, at his age, he is working, being among the best," he said.