World championship leader Jenson Button warned on Sunday that he has what it takes to hold off his rivals and seize his chance this season.
The British Brawn driver holds an 18.5-point lead in the championship thanks to an outstanding start to the year but three races without a podium finish has given others hope.
The Red Bull pair of Mark Webber and Sebastian Vettel are among his closest challengers and Button admits it will take hard work to stay ahead.
"When you have the opportunity you have to take it," Button told BBC Radio Five Live's Sportsweek programme.
"This opportunity is the best I have had in Formula One by far and you have to take it. There might not be an opportunity again.
"It's got to be head down focusing on getting the best out of the car every race we go to.
"At the moment I am leading the world championship, which is a great position to be in, but the last three races for us have been a little bit more difficult than we expected.
"We can put it all down to the cooler climates. Even in Hungary the circuit was a lot cooler on Sunday than it was earlier in the week," he said.