England striker Wayne Rooney believes complacency is the biggest obstacle to Roy Hodgson's squad qualifying for next summer's World Cup.
Wembley victories against Montenegro on Friday and Poland four days later will ensure England of automatic qualification for the showpiece in Brazil.
Rooney is convinced England will secure automatic qualification, but he insists they have full respect for their opponents.
"We're going to do it. We're going to get to the World Cup," Rooney said.
"I'm confident, we're confident, but you always have to be sure you're not over-confident. These are going to be two tough games for us, but we're good enough to do it."
"They are going to be two tough games, though, because Montenegro and Poland are good sides and their best qualities are on the counter attack.
"We will have to try and break them down and make sure we don't get caught out at the back. I think we'll do it, but nobody should think it's going to be easy."
Rooney has also declared himself fighting fit after sustaining a minor injury while playing for Manchester United in Saturday's 2-1 win over Sunderland.
"I've got a little knock but I'll be fine for England," Rooney added. "I can't wait to be honest. As soon as the Sunderland game had finished, I started to think about England."
Another player nursing a knock is Ashley Cole who was forced off in the second-half of Chelsea's 3-1 win at Norwich City with a rib injury.
Chelsea boss Jose Mourinho is confident that Cole will be fine for England, but Roy Hodgson is now awaiting the results of scans on the 32-year-old.
"He had something in his ribs that we need to assess, but hopefully it's fine," said Mourinho.
"He goes for a scan now, when we arrive (back in London), on his ribs. I hope he is fine.
"I want England to do (well), so I hope he's fine."
The squad will meet up for the first time at St George's Park in Burton on Monday ahead of their clash with Montenegro on Friday.
Hodgson looks to have a near full strength squad at his disposal for the games and if Cole does make it, Arsenal winger Theo Walcott - who is out with a stomach problem - is the only likely absentee from his strongest starting XI.