Chris Coleman has promised it will not be the end of the road for his Wales side if they are eliminated from Euro 2016 on Monday night.
Wales' fate in France will be determined when they meet Russia in Toulouse as Group B leaders England play Slovakia in St Etienne.
Coleman's side could end up as group winners if they beat Russia and England lose to Slovakia.
A point should also secure their place in the last 16, and they could even qualify as a best third-placed team if they lost and results were favourable elsewhere.
But defeat could send them home and manager Coleman said: "Everybody will look at this as the be-all and end-all.
"Whether we progress or we don't, it's not the end of the journey for this team.
"This team has got the potential to go on and on, there's more to come from these players in the future."
Coleman said Wales had learned from their first experience of a major tournament for 58 years.
He said it would put them in good stead ahead of the 2018 World Cup qualifying campaign, which starts in September.
"Nobody wants this tournament to end," said Coleman.
"This is our first taste of major tournament football, it's amazing, it's fantastic. It's tough... relentless.
"Whenever it is our time to go home, the team will take so much from this.
"Playing against the best teams in Europe, to get anything you have to be at your maximum - physically, mentally, technically, tactically. Pushing yourself to the limit.
"This group can't lose, we will go home whenever that time is with so much experience.
"Normally we are a bounce team - someone to practice against - but not any more, and it is still not over for us."
Coleman said Wales had managed to "box off" Thursday's defeat to England, in which Daniel Sturridge scored in the final seconds to inflict a 2-1 defeat.
But he said the objective was not to play for a draw against Russia, which could see them finish second in the group and set up a last-16 date with the runners-up in Group F.
"There are so many different scenarios - can you get through with three points, does four points guarantee you?" said Coleman.
"All we know our fate is in our hands if we win the game, we're matter through no matter what.
"If you worry too much what you do is lose your focus. What you must do is take care of our own business.
"We did that to get here, did that to put us in a position to progress, and we've got to do the same tomorrow."
Coleman was part of the Wales backroom staff when Mark Hughes' side lost to Russia in a Euro 2004 play-off.
Those two games were fractious on the pitch, and there was an acrimonious fall-out when Russia midfielder Yegor Titov failed a drugs test.
Wales eventually took the case to the Court of Arbitration for Sport, but it was ruled that a team had to have more than one failed drug test for a replay to take place.
"I remember it - heartbreaking," said Coleman.
"But we're a different Wales team and it's a different Russian team.
"So I can't say my message to my players is we're going to make up for that loss.
"It's a different era, two different teams and a different situation. It's about now.
"That was a long, long time ago - these boys will be concentrating on what is ahead of them."