Spain midfielder Xavi is hoping to thrive under the pressure when his side take on Chile on Friday.
Group H is wide open with three teams in serious contention to qualify for the knockout rounds, and Chile currently top the pool with six points.
Spain began their South Africa campaign with a disastrous 1-0 defeat to Switzerland, but they responded with a 2-0 triumph over Honduras.
They now go into their final clash knowing that a win is a must, and Xavi wants to turn the pressure into a positive performance.
"There's a great deal of pressure because we have to win," the Barcelona playmaker said. "We have to take control of the ball and assert our personality on the pitch.
"We're glad they are going to attack. Chile is an intense team. They don't give you time to breathe. They are pushing forward. They will try to attack.
"We have our own plan. It's a good plan that has worked for years. It might take us a long way in the World Cup. It's going to be a wonderful show."
Xavi would not go so far as to promise a victory but said he was confident Spain would get the job done.
"I feel comfortable. We've played two good matches. We played much better in the first match than the second but we didn't win," he added
"We have to be optimistic all the time that we are going to win. That's what we will offer to the Spanish people. We will try to make them all happy."