"I have had an incredible career so far," Beckham reflected.
"I have had ups and downs, played in three World Cups, been captain of my country and played for some of the biggest clubs in the world.
"But if we reach another World Cup and I play some part, it will be up there with all the other achievements I've had in my career."
Beckham believes England are in prime position to secure a place in the finals in South Africa next year, having missed out on qualification for Euro 2008, ironically with defeat against Wednesday's opponents Croatia.
"Not qualifying for that competition was disastrous for us," he added.
Beckham eyes World Cup qualification
"It was one of the most difficult times. When you don't win a game you should at Wembley and don't qualify it's hurtful.
"In the changing room afterwards, everyone was so upset. We were depressed for a few months and we need to put it right.
"This team is now together. There are some of the best players in the world in this squad.
"Of course, there are flaws in the team and mistakes that are made, but it's about correcting them and moving on.
"Wednesday is not about revenge or putting bad memories to rest. Our objective is to reach the World Cup."
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