Holland coach Louis van Gaal
van Gaal admits his side will not be able to control all the aspects of the game.Reuters

Netherlands head coach Louis van Gaal has promised to take his side to the very end of the 2014 World Cup.

The Dutch start their World Cup campaign tonight (12:30 am) against defending Champions Spain, who defeated them in the 2010 final. Netherlands will also face Chile and Australia in Group B.

The Oranje are under a lot of pressure to perform, especially after their disappointing performance in the 2012 European Championship, where they were eliminated after failing to register a single victory in the group stages.

Nevertheless, van Gaal, who feels teams need to enjoy themselves rather than remaining serious all the time, is adamant that his side will stay in Brazil for the whole of the tournament.

"You have to enjoy yourself. You can't be serious all the time. You have to release the tension. Cope with the pressure. We have five weeks here. Make no mistake: we will be here for five weeks."

However, the 62-year-old tactician, who will take charge at Manchester United after the end of the World Cup, admits the Dutch will not be able to control all aspects of the game.

"I also feel the tension in my stomach. If you play such a big tournament, of course not everything just depends on your technical and your tactical skills. We saw that [in Brazil's win over Croatia], for instance - you can't control everything."

The former Bayern Munich boss insists that Spain are a very formidable opponent and his side will have to work very hard to get something out of the match on Friday.

"Spanish football might be the best in the world, with the physical and technical sides all linked up. I like the dedication of the Spanish players. They are ranked No.1. We are ranked No.15. We have to play a compact game against them."

Meanwhile, van Gaal claims his move to United has been a pleasant distraction, amid the World Cup preparations.

"You can't just focus monotonously on the World Cup, so perhaps Manchester United was a good distraction. You can't be fully focused on football for five weeks," van Gaal pointed out.