Carragher: Clean sheets crucial to Liverpool's run of form
A seven-match unbeaten Barclays Premier League run has now brought 17 points and six clean sheets, lifting them into the top four for the first time since early October.
But they face a tough test on Wednesday when they travel to Arsenal.
Bootle-born Carragher knows how important the derby victory over Everton was for morale.
"It is not just three points, it has a massive impact and everyone is buzzing," said the 32-year-old.
"But that can change if the result doesn't go our way at Arsenal.
"It is important we keep that feel-good factor after the Arsenal game and that will be by making sure we get a good result.
"We are going into the game in a great frame of mind but Arsenal away is always difficult.
"We have been to the Emirates for a couple of years now and I don't think we've won there yet so it is something we are going to have to do sooner or later and hopefully Wednesday will be the time.
"For the last four or five years we have been good defensively under Rafa and we are just getting back to our normal selves.
"If you keep clean sheets you are going to win games."