Kevin Pietersen insists England have already put their third Test thrashing behind them as they look to retain the Ashes.
England head to Melbourne for the fourth Test with the series level after they suffered a 267-run defeat in Perth.
Pietersen, who scored a career-best 227 in the victory in Adelaide, could only manage a duck and three at the WACA but he knows he can't afford to dwell on the defeat.
And the Surrey batsman believes England are now fully focused on the remaining two Tests down under.
"We've had such an amazing trip so far," he said. "Everything has gone for us on every occasion we've played.
"The weather didn't go for us in the Adelaide tour game, or we'd have probably won that as well.
"We've got to look at the positives - we're very good at doing that. We're very good at leaving things alone as well.
"The key to us being successful on this Ashes trip would just be to forget about last week - learn from the mistakes we made, but just forget about last week.
"The open and honest meeting we had the evening the game finished was a very good meeting.
"We have left that, and it's time to look forward now. We've got to learn from the mistakes we made - and we'll be better prepared come Sunday."
Despite the poor performance in Perth, Pietersen said the squad are relishing the chance to play at the MCG - with a world-record crowd expected for the Boxing Day Test.
"We're all disappointed with what happened last week - but we're excited about this week's challenges," he said.
"We're 1-1 going to a Melbourne Test match, 100,000 people; if you're not excited, I don't reckon you should be doing what we do."