Roy Hodgson says England are fully aware that they must take their chances if they are to reach the last eight of Euro 2016.
The Three Lions take on Iceland in the round of 16 this evening, with a quarter-final against hosts France on offer for the victors.
And Hodgson, having seen his side score just three goals in as many group-stage fixtures, affirmed that now is the time for his players to become more ruthless in front of goal.
England v Iceland
UEFA Euro 2016
Round of 16
8pm (BST), Monday 27 June
Stade de Nice, France
Live on ITV
"We desperately want to stay in the tournament," the England manager said at the pre-match press conference in Nice.
"We think that we're good enough to stay in the tournament but to do that we've got to get results, and that must start here because there's no draws available now - it's win or lose.
"We're fully aware of that and we'll be trying our very best to win because we want to stay in the tournament."
FATV rounds up England's pre-match press conference at the Stade de Nice
Hodgson's thoughts were echoed by his captain, Wayne Rooney, who is in line to return to the starting XI after being benched for last Monday's draw with Slovakia.
"We've dominated the three games we've played," he said, "and we haven't always done that. We know that, if we keep getting chances, we'll score goals.
"But we need to take those chances because we're in the knock-out stages of the tournament so we haven't got much time to be wasteful."
Hodgson added that he expects Iceland, who defied expectations to not only qualify for the tournament but finish second in Group F, to be a resolute test.
He explained: "The character of the Icelandic people - their determination, their ability to survive through hardships - has, I'm certain, been a major factor in their progress.
"We'll have to accept the title of favourites and they will go into the game as underdogs.
"But we know perfectly well that, whether we entitle them as favourites or underdogs, it's going to be a very, very difficult game for us and they're going to be a hard team to beat."
Watch as the England squad visits Nice ahead of facing Iceland
Rooney, meanwhile, warned against drawing comparisons between the sizes of the two countries involved in tonight's game.
"We respect Iceland and what they’ve done in this tournament, and the size of the country is just a number," he affirmed.
"They put the same amount of players on the pitch as we do so it’s a fair game in that respect.
"We have to play our game and not concentrate on what Iceland are going to do – if we do that, then we’re confident we can win the game.
"Fair play to Iceland – they’ve done well in this tournament and they’re a difficult team to break down so we’ll have to be at our best to win.
"We’ll have to move the ball quick and take our chances when they come."