Steven Gerrard is determined to make the most of this season because he knows it could be his last as an England player.
Now 33, Gerrard would be aiming to reach his fourth World Cup had it not been for the groin injury that prevented him featuring in the 2002 tournament in South Korea and Japan.
But whilst his performances continue to be worthy of a place in Roy Hodgson's squad, and are likely to be so beyond the current qualification campaign, there will come a time when Gerrard feels his body can no longer cope.
There has been no suggestion that is what will happen but alternatively, the coach may wish to look beyond Gerrard and place more emphasis on the younger players in his squad.
Either way, the England skipper realises he can take nothing for granted.
And on the eve of a high-profile friendly against Scotland, Gerrard outlined his determination to hit the heights this term.
"I can't assume I'm going to be here in two or three years' time," he said.
"I've got to assume it's my last year and make the most of every single game.
"This is such an important year. For all I know, I might be out of the picture in a year's time so I want to make the most of it."
The priority is clearly to reach next summer's World Cup finals in Brazil, and beyond that, put in a decent showing.
More immediately, it is a renewal of international football's oldest rivalry for the first time in 14 years, with England looking to record the first Wembley victory over the enemy from north of the border since Gazza's epic goal at Euro 96.
"We haven't played them much over the years but Euro 96 was probably the stand out one," said Gerrard.
"As a player you want to make your own history and have your own memories.
"They are bringing 20,000 fans down so if we were to get beaten I am sure we will be criticised for a long time. That goes to prove how big it is."
It also brings Gerrard into direct combat with former Liverpool team-mate Charlie Adam, who was part of that ill-fated Kenny Dalglish recruitment drive but lasted just a single season before being offloaded to Stoke.
"You could say every player that's moved on or is sold and doesn't want to go has been unlucky but it didn't work out for Charlie," said Gerrard.
"He has done well at Stoke.
"He is a technician. You can't give him time and space because he can create and is dangerous from set pieces.
"He is a great lad off the pitch - and he has been in touch recently."