Head coach Fabio Capello believes the key to England's resurgence under his leadership has been the restoration of confidence.
England are well on their way to qualifying for the 2010 World Cup after starting their campaign with four successive victories - including a 4-1 win over former nemesis Croatia in Zagreb.
Speaking ahead of Wednesday's friendly with Germany, Capello believes a confidence has returned to the squad that failed to qualify for Euro 2008 under former coach Steve McClaren.
"What has changed the most is the confidence of the players," said the Italian.
"In my first game against Switzerland in February, I remember we played without confidence. Now I can see it. It is the most important thing."
Meanwhile, Capello is hoping to continue England's impressive recent form despite his squad missing a host of star names.
Wayne Rooney, Rio Ferdinand, Ashley Cole and Joe Cole have all been omitted from the 23-man squad due to injury, while the likes of Gabriel Agbonlahor, Curtis Davies and Michael Mancienne could all make their international debuts in Berlin.
"It is very important for me to follow a certain route even though a lot of players are injured," he continued.
"As a team manager you can work every day. In charge of England I get three days and one game a month.
"Confidence disappears more quickly than it appears so we should keep to the road that has got us results."