Gethin Jenkins wants Wales to impose themselves early on Millennium Stadium visitors Australia this weekend in their quest for a first win since June 2.
Wales will drop outside the world's top eight teams if the Wallabies triumph. And that would mean Wales entering next Monday's 2015 World Cup pool draw as a tier three nation, increasing considerably their degree of difficulty when the tournament comes around.
"We've really got to pick our game up this week and try to get that win," said prop Jenkins, who is set to win his 94th cap on Saturday. "It's all about getting out on the field and imposing ourselves early doors."
He went on: "We've let teams get on top of us. Argentina and Samoa knew they had a big chance of beating us, and we let New Zealand get on top of us early.
"There is no excuse for losing three games. We came back in the end last Saturday, but we are disappointed in the way we let the All Blacks get a 33-0 lead.
"Everyone will say that winning makes a massive difference.
"It's just a case of picking ourselves up this week and getting through the things we need to work on."
Wales head coach Warren Gatland will announce his starting line-up on Thursday, with a minimum of two changes guaranteed.
Cardiff Blues prop Scott Andrews is favourite to take over from Aaron Jarvis, who suffered a season-ending knee injury against New Zealand, but lock Bradley Davies' replacement appears a little more uncertain.
Davies, left with severe concussion after being hit from behind by All Blacks hooker Andrew Hore during the opening minute five days ago, could see his place go to Ian Evans if Evans shakes off a knee problem. Aaron Shingler, who went on for Davies, would be another option, as would versatile Ryan Jones, provided he recovers from a head injury in time.