Declan Kidney refuses to allow his Ireland players to dwell on the injustice of Saturday's 19-13 defeat by Wales.
Any faint RBS 6 Nations title hopes were extinguished at the Millennium Stadium when a controversial try by Mike Phillips left the Irish nursing a strong sense of grievance. The try, scored from a quick line-out, should have been disallowed for a variety of reasons, but touch judge Peter Allan failed to spot that the laws had been breached.
Ireland were infuriated by the decision to allow the try to stand, but Kidney insists his side must show their character by rallying in time for England's visit to Dublin on Saturday and he said: "Our job is to prepare for the next game. It's as simple and brutal as that."
Kidney added: "If we keep looking at the past we'll never get anywhere. If there's an hour or two of that, let's do it.
"But then we have to get on with it and then get ourselves ready for the next game. What doesn't kill you makes you stronger, that's the test. This tests the team.
"I don't think it will be hard to get this calibre of player ready for England."
Phillips' 50th-minute touchdown proved to be the decisive score and hooker Rory Best left little doubt over the repercussions of Allan's blunder.
"There's no doubt it was a real momentum-swinger that got their tails up. It was a big change in everyone's mindset," he said.
"Everyone has seen the footage and it speaks for itself.
"But we feel we had enough chances before and after the dubious decision that it shouldn't really have mattered."