England manager Roy Hodgson insists the first back-to-back Wembley defeats since 1977 is not a reason to panic.
Following Chile's 2-0 friendly win on Friday, Germany beat England on Tuesday, thanks to Arsenal defender Per Mertesacker's first-half header.
"There's certainly no question of panic," said Hodgson.
"If anything I'm much wiser, with regard to the players I've got at my disposition and what we need to work on going into a tournament."
Hodgson also argued that he has had "a great year" as England manager - despite the two home losses.
"I'm not prepared to accept that two friendly defeats in which I have used a lot of players in two tough games is going to take the shine off what has been a very good year," said Hodgson.
"It has been a great year for the Football Association on their 150th anniversary and it's been a great year for me because we have qualified for the World Cup.
"We have achieved our goal and we have a lot to look forward to. I am looking forward very much to 2014."
England were jeered off at the final whistle for the second game in succession after Tuesday's defeat.
But Hodgson explained the two matches were a valuable exercise in allowing him to view candidates to make up his squad for the World Cup.
Having qualified for the finals unbeaten, Hodgson experimented with 25 players against Chile and Germany - handing debuts to Celtic's Fraser Forster as well as Southampton duo Adam Lallana and Jay Rodriguez.
Hodgson said: "You are always disappointed to get boos but there are not many games when the home crowd don't get the result they are hoping for and there are no boos.
"If we want to get acclaim, we are going to have to play better and win matches. We didn't play well enough and we didn't warrant that."
"Of course they're disappointed - they came to try and see us win the game and we weren't able to do so. But in the two games we used 20-odd players and didn't attempt to win them by putting our best 11 on the field on both occasions.
"We tried to test a lot of players out and use these games as a chance to learn more about squad."
Hodgson's major plus point was the performance of goalkeeper Joe Hart, who was outstanding in defeat on his return to England's side after being rested against Chile - and following a run of indifferent form that saw him dropped by Manchester City.
He said: "Joe Hart proved I was right about him. I thought Joe played very well. He wasn't snowed under with work because I thought the game was quite even for large periods - but when he had to, he made saves."
Hodgson admitted he was unhappy with England's work in attacking areas, saying: "Where Germany were superior was in the quality of their passing and in their finishing around the final third. I thought we let ourselves down in that area and that was a disappointment.
"The major disappointment was that we didn't show the quality I was hoping for."
England have one more friendly - against Denmark on 5 March - before a 30-man provisional squad is announced on 13 May and cut to 23 on 2 June, with the World Cup starting on 12 June.
Hodgson suggested shock selections were now unlikely and ruled out a return for Chelsea captain and centre-back John Terry, who retired from international duty in September 2012.
Commentating on the Germany match for BBC Radio 5 live, former England defender Danny Mills - a member of Football Association commission set up to improve the national team's long-term fortunes - repeatedly called on Hodgson to bring Terry back.
Chelsea manager Jose Mourinho also believes Terry's decision may have been too hasty and it is understood the player himself would consider a comeback were England to suffer an injury crisis and ask him.
But Hodgson confirmed: "We've moved on from that. John retired and we've qualified with 10 matches unbeaten, with Gary Cahill and Phil Jagielka, and we've seen a very good performance from Chris Smalling tonight.
"It's important we continue on those lines and continue looking forward and that we don't start panicking and looking backwards every time we have a reverse."