Robert Sidoli insists Wales will not get carried away despite being only one victory away from a Grand Slam because they remember all too well the acute pain of failure.
Two years ago, Wales were condemned to the wooden spoon as they lost all five of their RBS 6 Nations matches.
It was a new low for Welsh rugby.
In the midst of that run, Ireland snatched victory in Cardiff with a giant drop-goal from Ronan O'Gara right at the death.
And although Wales are now on the cusp of a high not experienced in the Principality for 27 years, there will be no premature celebrations amongst the players.
The memories of Ireland's victory in 2003 are still painful.
"We played them at home. They pinched it with the last kick of the game. Stephen Jones kicked a late drop goal and we had worked really hard and then Ronan O'Gara, in the last minute, kicked one from nearly half-way,'' Sidoli recalled.
"You have to go through things like that. Last year laid the foundations for the team and you can't underestimate how important that is. It is why all the boys' feet are on the ground.
"We enjoyed getting the result in Scotland but now we have to start preparing really well because Ireland will be a big test.
"The consequence of victory over Ireland is the Grand Slam. That is fantastic and of course we know about it, but we are just focusing on Ireland."
After Ireland's heroic big-game hunt of the Springboks and Scotland's six-try runaround of the Pumas, the challenge of engineering the most spectacular win of the autumn series now falls on Wales, writes Peter Jackson.